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  • How can you tell MYSQL to TRIM the X number of characters, beginning from the Back?

    - by Tim
    How do I write the following in MYSQL? SELECT SUBSTRING(value - (1 TRAILING CHARACTER)) FROM table; Basically substring(value, 2) trims the first letters. But I need to trim the last letters. I can't use substring(value, -4, 3) because I don't know the length of the value. Here's another example: SELECT * FROM table WHERE SUBSTRING(value - (4 TRAILING CHARACTER)) in (SELECT SUBSTRING(value - (1 TRAILING CHARACTER)) FROM table);

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  • Algorithms to trim leading zeroes from a SQL field?

    - by froadie
    I just came across the interesting problem of trying to trim the leading zeroes from a non-numeric field in SQL. (Since it can contain characters, it can't just be converted to a number and then back.) This is what we ended up using: SELECT REPLACE(LTRIM(REPLACE(fieldWithLeadingZeroes,'0',' ')),' ','0') It replaces the zeroes with spaces, left trims it, and then puts the zeroes back in. I thought this was a very clever and interesting way to do it, although not so readable if you've never come across it before. Are there any clearer ways to do this? Any more efficient ways to do this? Or any other ways to do this period? I was intrigued by this problem and would be interested to see any methods of getting around it.

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  • What is the fastest way to trim blank lines from beginning and end of array?

    - by Edward Tanguay
    This script: <?php $lines[] = ''; $lines[] = 'first line '; $lines[] = 'second line '; $lines[] = ''; $lines[] = 'fourth line'; $lines[] = ''; $lines[] = ''; $lineCount = 1; foreach($lines as $line) { echo $lineCount . ': [' . trim($line) . ']<br/>'; $lineCount++; } ?> produces this output: 1: [] 2: [first line] 3: [second line] 4: [] 5: [fourth line] 6: [] 7: [] What is the fastest, most efficient way to change the above script so that it also deletes the preceding and trailing blank entries but not the interior blank entries so that it outputs this: 1: [first line] 2: [second line] 3: [] 4: [fourth line] I could use the foreach loop but I imagine there is a way with array_filter or something similar which is much more efficient.

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  • ASP.NET MVC2 - Trim white space from form submits before server-side validation?

    - by David Lively
    If I add a validation attribute: public class ProductDownloadListModel { //xxxxx-xxxxx-xxxxx [Required] [StringLength(17)] public string PSN { get; set; } public DateTime PsnExpirationDate { get; set; } public DataTable Downloads { get; set; } } and the user enters a 17-character string but includes white space on the end, I get a validation error because the string is greater than that specified by the [StringLength(17)] attribute. How can I prevent this? I'd prefer not to have to have javaScript trim the string before submits.

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  • Fresh install on SSD with Ubuntu and Windows Vista, using whole disk encryption for Ubuntu

    - by nategator
    I would like to do a fresh install on a OCZ Vertex Plus R2 SSD 60GB drive I purchased on the cheap. Since the AES-encryption looks like it may not work optimally for this drive, I would like to set up a dual-boot to Windows Vista (the only Windows copy I have for clean install purposes) and Ubuntu 12.04 with the best encryption scheme possible. My plan is to have Windows around just in case I need to use a program that won't work with Wine and Ubuntu as my daily OS with all of my information secured in case the laptop is ever stolen or sold. Although this setup will not provide a lot of space, I think I can squeeze both OSes and have enough for second-computer office tasks. So, my questions are: Which OS should I install first, Ubuntu or Vista? Any special considerations when partitioning the drive? How should I install Ubuntu to ensure full disk encryption for the Linux partition(s) and or my daily computing? Is there a significant performance upgrade with doing a solo install of Ubuntu instead of a dual boot setup? Will TRIM, for example, work correctly? Are there any significant security concerns with going the route of a dual-boot, other than the fact that any activity on Windows may be fully recoverable if the drive is stolen or sold? Thanks in advance!

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  • Is wiper.sh working?

    - by Aleksander Blomskøld
    I'm setting up a server running Ubuntu Precise, and I'm trying to verify if SSD TRIM is working. fstrim is failing: ~ sudo fstrim -v / fstrim: /: FITRIM ioctl failed: Operation not supported So I tried wiper.sh in hdparm: wiper-3.5 sudo ./wiper.sh --verbose --commit /dev/sda1 wiper.sh: Linux SATA SSD TRIM utility, version 3.5, by Mark Lord. rootdev=/dev/sda1 fsmode2: fsmode=read-write /: fstype=ext4 freesize = 169502088 KB, reserved = 1695020 KB Preparing for online TRIM of free space on /dev/sda1 (ext4 mounted read-write at /). This operation could silently destroy your data. Are you sure (y/N)? y Creating temporary file (167807068 KB).. Syncing disks.. Beginning TRIM operations.. get_trimlist=/sbin/hdparm --fibmap WIPER_TMPFILE.11503 /dev/sda: trimming 3211263 sectors from 64 ranges succeeded trimming 3571713 sectors from 64 ranges succeeded trimming 3915776 sectors from 64 ranges succeeded (...) trimming 3657913 sectors from 60 ranges succeeded Removing temporary file.. Syncing disks.. Done. It seems to be working, but I'm wondering if it really is. Are there any cases where wiper.sh should work when fstrim isn't? Is there any way I can check if the TRIMing actually has succeeded (other than trusting the wiper.sh-log)?

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  • vbCrLf in Multiline TextBox shows up only when .Trim() is called

    - by Brandon Montgomery
    I have an ASP TextBox with TextMode set to MultiLine. I'm having problems with preserving the vbCrLf characters when a user tries to put line breaks into the text. When a button on the page is pressed, I'm taking the text from the control, trimming it using String.Trim, and assigning that value to a String property on an object (which, in turn assigns it to a private internal String variable on the object). The object then takes the value from the private internal variable and throws it into the database using a stored procedure call (the SP parameter it is put into is an nvarchar(4000)). ASPX Page: <asp:UpdatePanel ID="UpdatePanel2" runat="server" RenderMode="Inline" UpdateMode="Conditional" ChildrenAsTriggers="true"> <ContentTemplate> <!-- some other controls and things --> <asp:TextBox TextMode="MultiLine" runat="server" ID="txtComments" Width="100%" Height="60px" CssClass="TDTextArea" Style="border: 0px;" MaxLength="2000" /> <!-- some other controls and things --> </ContentTemplate> </asp:UpdatePanel> code behind: ProjectRequest.StatusComments = txtComments.Text.Trim object property: Protected mStatusComments As String = String.Empty Property StatusComments() As String Get Return mStatusComments.Trim End Get Set(ByVal Value As String) mStatusComments = Value End Set End Property stored proc call: Common.RunSP(mDBConnStr, "ProjectStatusUpdate", _ Common.MP("@UID", SqlDbType.NVarChar, 40, mUID), _ Common.MP("@ProjID", SqlDbType.VarChar, 40, mID), _ Common.MP("@StatusID", SqlDbType.Int, 8, mStatusID), _ Common.MP("@Comments", SqlDbType.NVarChar, 4000, mStatusComments), _ Common.MP("@PCTComp", SqlDbType.Int, 4, 0), _ Common.MP("@Type", Common.TDSqlDbType.TinyInt, 1, EntryType)) Here's the strangest part. When I debug the code, if I type "test test" (without the quotes) into the comments text box, then click the save button and use the immediate window to view the variable values as I step through, here is what I get: ?txtComments.Text "test test" ?txtComments.Text.Trim "test test" ?txtComments.Text(4) " "c ?txtComments.Text.Trim()(4) " "c Anyone have a clue as to what's going on here?

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  • Trim a string in C

    - by Orion Edwards
    Briefly: I'm after the equivalent of .NET's String.Trim in C using the win32 and standard C api (compiling with MSVC2008 so I have access to all the C++ stuff if needed, but I am just trying to trim a char*). Given that there is strchr, strtok, and all manner of other string functions, surely there should be a trim function, or one that can be repurposed... Thanks

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  • Defrag/TRIM settings for hybrid hard drive?

    - by Joel Coehoorn
    I recently acquired a momentus XT hybrid hard drive. This is a tradition spinning HDD with a small SSD portion for frequently used files. Normally, you are not supposed to defrag SSDs, as it does not help performance and can significantly reduce the life of the drive. But you do need to defrag an HDD to keep good performance. So where does that leave us for hybrid drives? Do I need to turn off defragging in Windows to preserve the SSD portion? Is the on-disk controller smart enough to handle defragging correctly? Is there some utility I need to set it up that I missed? Additionally, for SSDs you normally want to check for and enable TRIM support... but this makes no sense for a HDDs. Where does that leave us for hybrid drives? Should I try to enable TRIM or not?

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  • Can I enable discards on a LUKS-encrypted ssd drive in RHEL6 (and do I need to)?

    - by Dan Nestor
    I have a RHEL 6.4 workstation, running on a LUKS-encrypted LV residing on a SSD. I found RedHat documentation stating that dm_crypt does not currently support TRIM passthrough, however I also found other sources that state the opposite (albeit for other distributions) and even that discards are not needed for recent SSD drives which use some sort of automatic garbage collection. So: 1) Can I enable TRIM/discards with my setup? 2) Do I need to, for optimal disk performance? Thanks for your thoughts.

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  • Batch Script to Trim lines in text to first 30 or 50 characters only

    - by SuperUserMan
    I am now new to scripts but i find it really difficult understanding "for" command (especially with that tokens and delimiters etc) . Saying so, i think that for command can be used to do what i am doing. If its not and there is an easier way, ignore my ignorance :( Say i have multiple lines in a text file abc.txt with each line starting and ending with " (quotes) E.g. a file of 3 lines "hey what is going on @mike220. I am working on your car. Its engine is in very bad condition" "Because if you knew, you'd get shredded and do it with certainty" "@honey220 Do you know someone who has busted their ass on a diet only for results to come to a screeching halt after a few weeks" How can i trim each line, within the quotes, to a Fixed length say 30 or 50 or 100 characters (including spaces) I want to enter the number of character in batch and it can trim accordingly and produce a file def.txt with trimmed lines within quotes. Say i enter 50, results of above example should be "hey what is going on @mike220. I am working on you" "Because if you knew, you'd get shredded and do it" "@honey220 Do you know someone who has busted their" Thanks P.S. if you use For command, kindly please explain the command. EDIT: Though the answer provided worked, there is an issue with non english text. I am getting garbled text in Output file for non english text in input file . Any help @barlop here is the nonenglish text ( 1 line) "???? ?? ???? ?? ???? ???? ??? ?????? ???"

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  • SSD -- Special settings for SSD as secondary drive?

    - by Borg17of20
    Hello all, I recently purchased an Intel SSD (X25-V 40GB) and I want to add it to my PC as a secondary drive (not the boot/system drive) so I can install specific software to it. Now, do I need to do anything special to ensure long life and peak performance with this as a secondary drive? I have Windows 7 Pro. by the way. All the literature I can find covers the use of a SSD as a boot/system drive under Windows 7, but I don't want to run it like that (I have my reasons). I'm wondering if things like TRIM still work if you don't use the SSD as the boot/system drive. If TRIM and the like still works, do I have to do anything special in order to enable it for my particular setup? Thanks.

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  • My mail going on spam from SMTP server

    - by user1767434
    I am trying to send a registration confirmation mail from my site to user who are registering from my site. my code is:- $drg_name = addslashes(trim($_POST['drg_name'])); $drg_surname = addslashes(trim($_POST['drg_surname'])); $drg_email = addslashes(trim($_POST['drg_email'])); $drg_username = addslashes(trim($_POST['drg_username'])); $drg_pass = addslashes(base64_encode($_POST['drg_pass'])); $drg_addr1 = addslashes(trim($_POST['drg_addr1'])); $drg_addr2 = addslashes(trim($_POST['drg_addr2'])); $drg_addr3 = addslashes(trim($_POST['drg_addr3'])); $drg_town = addslashes(trim($_POST['drg_town'])); $drg_county = addslashes(trim($_POST['drg_county'])); $drg_zip = addslashes(trim($_POST['drg_zip'])); $drg_country = addslashes(trim($_POST['drg_country'])); $drg_phone = addslashes(trim($_POST['drg_phone'])); $drg_gender = addslashes(trim($_POST['drg_gender'])); $drg_pstatus = addslashes(trim($_POST['drg_pstatus'])); $drg_dod = addslashes(trim($_POST['drg_dod'])); $drg_dom = addslashes(trim($_POST['drg_dom'])); $drg_doy = addslashes(trim($_POST['drg_doy'])); $drg_dob=$drg_dod.'/'.$drg_dom.'/'.$drg_doy; $drg_question = addslashes(trim($_POST['drg_question'])); $drg_answer = addslashes(trim($_POST['drg_answer'])); //send confirmation email to user to activate his/her acc $encoded_usr_id=base64_encode($usr_id); $en_id=base64_encode($insert_id); $subject = "Confirmation From dragonsnet.biz" ; $message = "Thank you to register with dragonsnet.biz<br>\n In order to >activate your account please click here: http://My SITE URL/registration_success.php?envar=".$encoded_usr_id."&euid=".$en_id."' Activate\n Thank you for taking the time to register to the dragonsnet.biz Website. "; $this->_globalObj->send_email('support@ MY-Site', $drg_email, $subject, $message, 'Site Name'); $cnf=base64_encode("confirmation"); die($this->_globalObj->redirect("registration_confirmation.php?eml=$cnf")); } my mail is going in user mail ID but in Spam not in inbox. Please help Thanks In Advance.

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  • Intel RAID0 on Windows 8 not Displaying Correct Media Type

    - by kobaltz
    I have my primary C Drive which consists of 2 Intel 120GB SSD Drives in a RAID0. I have a clean install of Windows 8 Pro, latest MEI software, latest RST software, latest Intel Toolbox. Prior to this I had installed Windows 8 Pro as an upgrade. When I went into the Optimize Drives while in the Upgrade installation, it showed the Media Types as Solid State Drives. However, now since I am in a brand new install, it is showing the Media Type as Hard Disk Drive. I am worried about this because of the trim not working properly. Before when in the upgrade, it showed SSD as the media type and the Optimize option would perform a manual trim. Unfortunately, my search credentials on Google are so common to many other things (ie Raid0, SSD, Windows 8, Media Type) that all I am finding are useless topics. Before, (found on random site) it showed the Media Type as below

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  • .trim() in javascript not working in IE

    - by Jin Yong
    I tired to apply .trim() in javascript for one of my code. it's working fine under mozilla, but error display once I tried in IE8, does anyone know what is going on here? anyway I can make it work in IE? code: var ID = document.getElementByID('rep_id').value.trim(); error display: Message: Object doesn't support this property or method Line: 604 Char: 2 Code: 0 URI: http://test.localhost/test.js

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  • Using recursion to to trim a binary tree based on a given min and max value

    - by Justin
    As the title says, I have to trim a binary tree based on a given min and max value. Each node stores a value, and a left/right node. I may define private helper methods to solve this problem, but otherwise I may not call any other methods of the class nor create any data structures such as arrays, lists, etc. An example would look like this: overallRoot _____[50]____________________ / \ __________[38] _______________[90] / \ / _[14] [42] [54]_____ / \ \ [8] [20] [72] \ / \ [26] [61] [83] trim(52, 65); should return: overallRoot [54] \ [61] My attempted solution has three methods: public void trim(int min, int max) { rootFinder(overallRoot, min, max); } First recursive method finds the new root perfectly. private void rootFinder(IntTreeNode node, int min, int max) { if (node == null) return; if (overallRoot.data < min) { node = overallRoot = node.right; rootFinder(node, min, max); } else if (overallRoot.data > max) { node = overallRoot = node.left; rootFinder(node, min, max); } else cutter(overallRoot, min, max); } This second method should eliminate any further nodes not within the min/max, but it doesn't work as I would hope. private void cutter(IntTreeNode node, int min, int max) { if (node == null) return; if (node.data <= min) { node.left = null; } if (node.data >= max) { node.right = null; } if (node.data < min) { node = node.right; } if (node.data > max) { node = node.left; } cutter(node.left, min, max); cutter(node.right, min, max); } This returns: overallRoot [54]_____ \ [72] / [61] Any help is appreciated. Feel free to ask for further explanation as needed.

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  • calling a trim method in actionscript 2.0

    - by user151013
    Hi I Got a notnull function for a text field as below private function valStringNotNull( val:String ) :Boolean { if ( String(val).length <= 0 ) { _errorCode = "StringNull"; return false; } _errorCode = "NoError"; return true; } and this function is being called here var pCnt:Number = 0; _validateParams[pCnt++] = { type: "notNull", input: win.firstNameInput , isSendData:true, dataName:"firstName"}; _validateParams[pCnt++] = { type: "notNull", input: win.lastNameInput, isSendData:true, dataName:"lastName"}; _validateParams[pCnt++] = { type: "noValidation", input: roleCombo, isSendData:true, dataName:"role" }; Selection.setFocus(win.firstNameInput); and for the not null I defined this way private function validateCases ( param:Object ) :Boolean { _errorObj = param.input || param.input1; switch( param.type ) { case "notNull": return valStringNotNull( param.input.text ); break; } } but as you see as I defined the length should be greater than zero its taking even a space as an input and displaying blank white space in my text field so I got a trim function as below public function ltrim(input:String):String { var size:Number = input.length; for(var i:Number = 0; i < size; i++) { if(input.charCodeAt(i) > 32) { return input.substring(i); } } return ""; } and I need to call this trim function before my not null function so that it trims off all the leftside white space but as I am very new to flash can some one help me how to keep this trim function before the notnull function.Can some one please help me with this please

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  • Warning: Trim expects

    - by user1257518
    I'm getting this warning Warning: trim() expects parameter 1 to be string, array given in .. which is my trim line. The full code is functioned to send an error when fields are empty. However, this error appears saying every field is empty, but only the 'native' field is meant to be required so thats my 2nd problem. Thanks for any help! session_start(); $err = array(); $user_id = intval($_SESSION['user_id']); // otherwise if (isset($_POST['doLanguage'])) { $link = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("Couldn't make connection."); // check if current user is banned $the_query = sprintf("SELECT COUNT(*) FROM users WHERE `banned` = '0' AND `id` = '%d'", $user_id); $result = mysql_query($the_query, $link); $user_check = mysql_num_rows($result); // user is ok if ($user_check > 0) { // check for empty fields foreach ($_POST as $key => $val) { $value = trim($val); if (empty($value)) { $err[] = "ERROR - $key is required"; } } // no errors if(empty($err)) { for($i = 0; $i < count($_POST["other"]); $i++) $native = mysql_real_escape_string($_POST['native'][$i]); $other = mysql_real_escape_string($_POST['other'][$i]); $other_list = mysql_real_escape_string($_POST['other_list'][$i]); $other_read = mysql_real_escape_string($_POST['other_read'][$i]); $other_spokint = mysql_real_escape_string($_POST['other_spokint'][$i]); $other_spokprod = mysql_real_escape_string($_POST['other_spokprod'][$i]); $other_writ = mysql_real_escape_string($_POST['other_writ'][$i]); // insert into the database $the_query = sprintf("INSERT INTO `language` (`user_id`,`native`,`other`,`other_list`,`other_read`, `other_spokint` ,`other_spokprod`,`other_writ` ) VALUES ('%d','%s','%s','%s','%s','%s','%s','%s')", $user_id,$native,$other,$other_list,$other_read, $other_spokint,$other_spokprod,$other_writ); // query is ok? if (mysql_query($the_query, $link) ){ // redirect to user profile header('Location: myaccount.php?id=' . $user_id); } } } }

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  • How to maintain a SSD drive on Ubuntu ?

    - by Julien Nicoulaud
    I am running Ubuntu 10.04 on a Intel X25-M PostVille 160 Go SSD drive. How can I tell if there's something wrong ? What should/can I do to maintain its performance/health ? Should I use TRIM and how often ? This may look as a duplicate of this question, but I am more asking in term of good practices and learning how to use this new technology the right way...

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  • how to remove trailing and leading whitespace for user-provided input in dos?

    - by OopOop
    I know how to do this when the variable is pre-defined. However, when asking for the user to enter in some kind of input, how do I trim leading and trailing whitespace? This is what I have so far: @echo off set /p input=: echo. The input is %input% before ::trim left whitespace for /f "tokens=* delims= " %%a in ("%input%") do set input=%%a ::trim right whitespace (up to 100 spaces at the end) for /l %%a in (1,1,100) do if "!input:~-1!"==" " set input=!input:~0,-1! echo. The input is %input% after pause Thank you! :)

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  • Trim &nbsp; with php

    - by spotlightsnap
    Hello, I have a sentence like this. 1 $nbsp; &nbsp; &nbsp; 2 &nbsp; &nbsp; 3 &nbsp; 4 As you see, in between 1 2 and 3 text, there are extra spaces. I want the output with only one space between them. so my output will be 1 2 3 4 How can i use php trim to get the output like this. If i use trim, it can only remove whitespace, but not that   Thanks.

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  • (Django) Trim whitespaces from charField

    - by zardon
    How do I strip whitespaces (trim) from the end of a charField in Django? Here is my Model, as you can see I've tried putting in clean methods but these never get run. I've also tried doing name.strip(), models.charField().strip() but these do not work either. Is there a way to force the charField to trim automatically for me? Thanks. class Employee(models.Model): """(Workers, Staff, etc)""" name = models.CharField(blank=True, null=True, max_length=100) # This never gets run def clean_variable(self): data = self.cleaned_data['variable'].strip() return data def __unicode__(self): return self.name class Meta: verbose_name_plural = 'Employees' # This never gets run either class EmployeesForm(forms.ModelForm): class Meta: model = Employee def clean_description(self): #if not self.cleaned_data['description'].strip(): # raise forms.ValidationError('Your error message here') self.cleaned_data['name'].strip()

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