Cleanup Perl code: my $export2 = $doc; $export2 =~ s:\.odt:\.pdf:;
- by C.W.Holeman II
Perl code fragment:
my $export = $doc;
$export =~ s:\.odt:\.pdf:;
How would this be written cleaner? Not simply what are 900 other ways to write it, TMTOWTDI.
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what could be xpath or css for following snippet
- by doneright
click //div[15]/div/ul/li[5] In the snippet above, how can I write xpath or css selector based on known li item. Yes, I know li item ahead of time(such as @, +, * etc ) Also there is no guarantee that div[15] would be always div[15] it could be div[14] or div[17] etcRead the article
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Query posts based on author id
- by user338109
I have the current author id stored in $theauthorid I want to do a query based on the author id so I do this query_posts('author=$theauthorid'); However it does not work unless I write the id manually. I know the id is stored correctly as I get the correct id when I echo it.Read the article
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match strings in python
- by mesun
Write a function, called constrainedMatchPair which takes three arguments: a tuple representing starting points for the first substring, a tuple representing starting points for the second substring, and the length of the first substring. The function should return a tuple of all members (call it n) of the first tuple for which there is an element in the second tuple (call it k) such that n+m+1 = k, where m is the length of the first substring. Complete the definition def constrainedMatchPair(firstMatch,secondMatch,length):Read the article
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Are there any solutions for translating measurement units on Rails?
- by Leonid Shevtsov
I'd like to implement measurement unit preferences in a Ruby on Rails app. For instance, the user should be able to select between displaying distances in miles or in kilometers. And, obviously, not only displaying, but entering values, too. I suppose all values should be stored in one global measurement system to simplify calculations. Are there any drop-in solutions for this? Or should I maybe write my own?Read the article
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Which Perl module would you recommend for sending and getting e-mail?
- by sid_com
Hello! I am searching a Perl module to write (SMTP) and read (IMAP) e-mails. Which module out of the bunch would you suggest?Read the article
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Is there anyway to make Jekyll support linked list type post?
- by user300506
I've tried to write a post using a link list layout that I've created but couldn't get jekyll to generate properly. The problem should be in the index.html but I can't make the index page to generate both layout together. {% for post in paginator.posts %} {% include post.html %} {% endfor %}Read the article
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Sql-server Database query help
- by menacheb
Hi, I have a project in C# with a Sql-server Database. In that database I have a table named 'Process' and columns named 'process_name', 'Full_Name' and 'Version' (all of the type:nvarchar(50)). I want to write a query wich will add the new process, only if it doesn't exist in the table yet. How can I do that? Many thanks,Read the article
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Multiple OR Clauses in MySQL
- by Grant
I'm trying to grab content where id = 3 OR id = 9 OR id = 100... Keep in mind, I can have a few hundred of these ids. What is the most efficient way to write my query? $sql = "SELECT name FROM artists WHERE (id=3 OR id=9 OR .... id-100)"Read the article
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using markers instead of if and else statement in php
- by Mac Taylor
hey guys i need to shorten or better to say ., harden my codes this is my original code : if ($type = "recent") { $OrderType = "sid DESC"; }elseif ($type = "pop"){ $OrderType = "counter DESC"; }else { $OrderType = "RAND()"; } now how can i use markers like this : $OrderType = ($type = "recent") ? "sid DESC" : "counter DESC" ; i tried but i didnt know how to write elseif in marker wayRead the article
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Why does not IDictionary (non-generic) inherit from IEnumerable<DictionaryEntry>?
- by thorn
IDictionary<TKey, TValue> inherits from IEnumerable<KeyValuePair<TKey, TValue>>, but IDictionary for some reason doesn't inherit from IEnumerable<DictionaryEntry>. I wonder why? I hate to write this ugly .OfType<DictionaryEntry>() every time when I need to make a query against an IDictionary.Read the article
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C# question to ex-C++/ASM guys. Speed optimisation
- by maxima120
Which in C# compiled for x64 is faster? a. int * int; b. if(int < 0) int = -int; c. Math.Abs(int) I need pure theoretical answer. Please do not tell me to write loop and measure it with stopwatch. ThanksRead the article
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Equivalent of print "-"x20 of perl in Bash or command line
- by khmarbaise
In perl you can simply write print "-" x 20 and you get a line with dashes...but i need the same thing in bash/commandline on linux without perl/(g)awk etc. any ideas? The intention is to use it in the -exec of the find command and i want to prevent using simple echo "---------" ...Read the article
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Image service for a Application
- by Jedi Master Spooky
I am creating and application that need to save images. I don't want to write it if it already exits, Anyone know of a product that I can use so I don't have to develop mine. I am using asp.net MVC. What I want is something with and API that I can save to and retrieve to ( I don't want to store the images in my system if its possible). ThanksRead the article
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Simple 301 redirect; how do I get it to drop the query string?
- by Throlkim
Hopefully there's a simple solution to this. I'm setting up a redirect for old search listings, but I don't want any of the query string to carry over. The current rule is: redirect 301 /blog http://newdomain.com But this would redirect the following: http://www.olddomain.com/blog/2009/11/article-name-etc To this: http://newdomain.com/2009/11/article-name-etc When I just want: http://newdomain.com Can this be done in the simple 301 redirect, or will I have to write a mod_rewrite rule?Read the article
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python: html writer?
- by Bin Chen
With jquery it's very easy to insert some element inside another element using the selector technology, I am wondering if there is any python library that can do things similar with jquery, the reason is I want server side python program to produce the static pages, which needs to parse the html and insert something into it. Or other alternative, not in python language at all? EDIT: To be clear, I want to use python to write below program: h = html.parse('temp.html') h.find('#idnum').html('<b>my html generated</b>') h.close()Read the article
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Creating a binary file from an IntelHex in C#
- by Allek
I'm trying to create a binary file from a intelHex file. Iside the intelHex file I have data and address to which I should write the data inside the binary file. IntelHex file looks like that :10010000214601360121470136007EFE09D2190140 :100110002146017EB7C20001FF5F16002148011988 :10012000194E79234623965778239EDA3F01B2CAA7 :100130003F0156702B5E712B722B732146013421C7 :00000001FF So I have 4 lines here with data since the last one tells us thats the end of file. Here is what I'm doing to create the file while (!streamReader.EndOfStream) { string temp = String.Empty; int address = 0; line = streamReader.ReadLine(); // Get address for each data address = Convert.ToInt32(line.Substring(3, 4), 16); // Get data from each line temp = line.Substring(7, 2); if (temp == "01") break; else { temp = line.Substring(9, line.Length - 11); string[] array = new string[(temp.Length / 2)]; int j = 0; for (int i = 0; i < array.Length; ++i) { array[i] = temp[j].ToString() + temp[j + 1].ToString(); j = j + 2; } temp = String.Empty; for (int i = 0; i < array.Length; ++i) { temp = temp + Convert.ToChar(Convert.ToInt32(array[i], 16)); } } binaryWriter.Seek(address, SeekOrigin.Begin); binaryWriter.Write(temp); binaryWriter.Flush(); } Console.WriteLine("Done...\nPress any key to exit..."); The problem here is, that data in binary file in some places is not equal to data from the intelHex file. Looks like there is some random data added to the file and I do not know from where. First time I saw that there is an additional data before the data from the intelHex file. For instance first data line starts with 21, but in binary file I have a number 12 before the 21. I do not know what is wrong here. Hope someone can help me or guide me where I can find some usefull informations about creating binary files in C#Read the article
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first Occurrence Of Non Blank Cell vba
- by Madhu Kiran
Hi, I am trying to write VBA code which works on my Excel sheet. Range("A65536").End(xlUp).Row gives me the row number of the last non blank cell. similarly i am trying to get the row number of the first non blank cell in that particular column. Thanks in advance. madhuRead the article
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Rookie file permissions question
- by Camran
What is the ending 'r' for and the leading 'd' for in file permissions on Linux? Example: drwxr-xr-x I know about the user, group, others part, and I know w=write, r=read, x=execute. But I don't know about the leading 'd' and the trailing 'r'. Care to explain? ThanksRead the article
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similar to __asm int 3 in Max OS X/ Xcode?
- by Mark
Hi, When using visual studio to develop c++ applications, I used to write _asm int 3; and then build the application. When the application is executed, if the code path that has "_asm int 3" is encountered Visual Studio Debugger used to get lauched and I could debug the problems. Is there any similar approach when developing using Xcode on Mac OS X? Thanks a lot. MarkRead the article
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Linq to Sql statement for multiple aggregate values in single expression
- by Jeff Langston
How would I write a linq to sql statement for the following tsql? select count(*), sum(Amount), avg(Amount), min(Amount), max(Amount) from TableNameRead the article
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How to make a foreign key connect with sqlite3 and Ruby on Rails
- by Trip
Does anyone know the way, or a place where I can find out how to do this? Basically, all I want to do is connect a foreign key between two tables. Is it true, that all I have to do is write the "belongs_to" and "has many" ?Read the article
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Oracle join query
- by Jasim
There are three tables in my db ITEM_MASTER, PRICE_MASTER, COMP_MASTER ITEM_MASTER STORE_CODE ITEM_CODE ITEM_DESC 011 914004 desccc PRICE_MASTER STORE_CODE ITEM_CODE COMP_CODE 011 914004 01 011 914004 02 011 914004 03 011 914004 04 COMP_MASTER COMP_CODE COMP_DESC STORE_CODE 01 comp1 011 02 comp2 011 03 comp3 011 04 comp4 011 I want to get all these for an ITEM_CODE in single query STORE_CODE ITEM_CODE ITEM_DESC COMP_DESC1 COMP_DESC2 COMP_DESC3 COMP_DESC4 011 914004 desccc comp1 comp2 comp3 comp4 How can i write a oracle SQL query for this??Read the article
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Validationattribute only when value is changed?
- by boris callens
I want to write a custom ValidationAttribute that checks if the given value is unique or not. The problem is that in the edit screen, it is not guaranteed that the user actually changed the value, resulting in a false error. Is there a way to check in my attribute whether the value actually changed? Or can I trigger the attribute only when the value has changed? I'm getting the feeling this requirement maybe just doesn't belong in an attribute?Read the article
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Is it good practice to use the XOR (^) operator in Java for boolean checks?
- by Pete
I personally like the 'exclusive or' operator when it makes sense in context of boolean checks because of its conciseness. I much prefer to write if (boolean1 ^ boolean2) { //do it } than if((boolean1 && !boolean2) || (boolean2 && !boolean1)) { //do it } but I often get confused looks (from other experienced java developers, not just the newbies), and sometimes comments about how it should only be used for bitwise operations. I'm curious as to the best practices others use around the '^' operator.Read the article
