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  • Any method to denote object assignment?

    - by Droogans
    I've been studying magic methods in Python, and have been wondering if there's a way to outline the specific action of: a = MyClass(*params).method() versus: MyClass(*params).method() In the sense that, perhaps, I may want to return a list that has been split on the '\n' character, versus dumping the raw list into the variable a that keeps the '\n' intact. Is there a way to ask Python if its next action is about to return a value to a variable, and change action, if that's the case? I was thinking: class MyClass(object): def __init__(*params): self.end = self.method(*params) def __asgn__(self): return self.method(*params).split('\n') def __str__(self): """this is the fallback if __asgn__ is not called""" return self.method(*params)

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  • How can I (reasonably) precisely perform an action every N milliseconds?

    - by Jon Cage
    I have a machine which uses an NTP client to sync up to internet time so it's system clock should be fairly accurate. I've got an application which I'm developing which logs data in real time, processes it and then passes it on. What I'd like to do now is output that data every N milliseconds aligned with the system clock. So for example if I wanted to do 20ms intervals, my oututs ought to be something like this: 13:15:05:0000 13:15:05:0020 13:15:05:0040 13:15:05:0060 I've seen suggestions for using the stopwatch class, but that only measures time spans as opposed to looking for specific time stamps. The code to do this is running in it's own thread, so should be a problem if I need to do some relatively blocking calls. Any suggestions on how to achieve this to a reasonable (close to or better than 1ms precision would be nice) would be very gratefully received.

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  • How to know if a MySQL UPDATE query fails because information being supplied matches data already in

    - by Mike
    I have a query where the user types a block of text in a textarea field. They are able to save this information in a database. The problem is that if they have not changed the information or if the information matches the data already in the database, I recieve a '0' for affected rows. Usually I display an error that says the query failed when there are no affected rows. How would I 'know' that the 0 affected rows is because the data already exists, so that I can display a more specific error?

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  • mootools 1.11 .setHTML not working in IE

    - by moleculezz
    Hello, I am trying to make a form dynamic using mootools 1.11, for specific reasons I cannot upgrade atm. I'm trying to manipulate a select field to have dynamic options. This works in Firefox & Chrome but not IE8. Hope there's a fix for this. bits of the code: myOptions(hrs+1, 23, 'uur'); $('vertrektijd_uur').setHTML('<option value="">Kies uur</option>'+options_uur); $('vertrektijd_uur').addEvent('change', function() { hrsChanged = $('vertrektijd_uur').getValue(); hrsChanged = parseInt(hrsChanged); if(hrs+1 == hrsChanged) { myMinutes(parseInt(min)); myOptions(minChanged, 55, 'min'); $('vertrektijd_min').setHTML('<option value="">Kies minuten</option>'+options_min); } else { myOptions(0, 55, 'min'); $('vertrektijd_min').setHTML('<option value="">Kies minuten</option>'+options_min); } });

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  • Why does php's file_get_contents incorrectly retrieve json files from xkcd?

    - by hally
    In writing a PHP script to download xkcd comics, i incurred errors when trying to get specific comics (as opposed to the latest one). Specifically, pointing file_get_contents at the following url: xkcd.com/$COMIC_NUM/info.0.json inexplicably retrieved the xhtml version of the comic's page on xkcd.com, and not a JSON file. However, if i request the exact same url in my browser, the correct JSON file is downloaded. I'm not sure why this is happening, but i suspect it has something to do with the request headers being sent. Please help! :S

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  • date comparison inside a list returned

    - by rob
    I have a ArrayList returned from a service which contains date-timestamp as String values (with values: 2010-05-06T23:38:18,2010-05-06T23:32:52,2010-04-28T18:23:06,2010-04-27T20:34:02,2010-04-27T20:37:02) to be more specific, This is part of a parent ArrayList ObjectHistory. This list contains the datestamp and serial number. I need to pick the correct serial number. Objecthistory is the List object and I need to get the latest timestamp within this ObjectHistory. I need to pick the latest timestamp from this Arraylist in Java 6. How should I be doing this? Should I do convert these values into calendar-time? I am in panic mode as this has to be done directly in production.

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  • Seasonal Pricing for a Hotel Room

    - by Laykes
    I am trying to manage seasonal prices for hotel rooms. The only way that I can think of doing it would be to use: | DayDate |EndDate | A | B ----------------------------------------------- | 2010/07/1 |2010/07/2 | 200 | 40 | 2010/07/3 |2010/07/4 | 150 | 40 | 2010/07/5 |2010/07/5 | 150 | 50 | 2010/07/6 |2010/07/7 | 200 | 50 | 2010/07/8 |2010/07/9 | 100 | 60 etc.. (table taken from another question). The problem is: I don't want my seasons to be year specific. Seasons for rooms shouldn't change year on year. I don't want my users to have to enter the seasonal information several times. I am also going to have thousands of rooms, so I don't know a way to make this easily manageable. I'm using mysql and php.

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  • database search function on an HTML page possible?

    - by synergy989
    Not sure if this is against stackoverflow rules as it's not a specific code question but I really need a little help. I want to know if it is possible to create a search feature (search box) on an HTML webpage that will query a database and return the results? Basically I have a database of products and their related categories. A user would come to the website, enter the category in the search field...somehow query the database and return the results on a new page. Note: the results page doesn't have to be HTML (could be PHP etc). If you could also include a little guidance on how (please nothing detailed, just need a direction). Thank you!

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  • jQuery Animation and Classes

    - by ehdv
    Assume you have a list item, <li id="foo"> which you want to fade from one color to another when moused over, and that you are using jQuery. This is fairly easy: $('li#foo').bind('mouseenter' , function(e) { $(this).animate({backgroundColor: '#F00'} , 300); }); However, what if you wanted to get the resulting color or other style rules from a class defined in CSS without also declaring them in JavaScript? It seems there's no way to learn style information from CSS rules without having an example of the rule already in the document, which would require you to animate the <li> to the target appearance, then in the animation-finished callback, set the class which leads to redundant style declarations and can foul up your CSS at "runtime". Sorry if this question's unclear: It doesn't occur in the context of any specific project, I'm just curious how you'd go about this. Also, I know CSS3 hypothetically includes support for such transitions but using CSS for dynamic behavior like this seems such an ugly hack.

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  • Modal dialog not working in chrome/explorer yet works in firefox

    - by Mike Z
    I have the following modal dialog click function $("#foo").click(function(){$("#bar").dialog({ width: 400, modal: true, resizable: false, buttons:{ "Save": function(){ $.post('remote_foo.php', $('#waka').serialize(), function(data){ $('#list').html(data);}) $(this).dialog("close"); $('.dial').val(''); $('.url').val('http://'); }, "cancel": function(){ $(this).dialog("close"); } }//end of buttons }).('open');//end of jquery dialog })// end of click function It works fine in firefox but to be honest i dont even think my click function is set up right. 1)Is this the proper way to open the dialog with a click. 2) is there a specific reason that this would not work in chrome/internet explorer? (This is the jquery ui)

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  • Need to sync two lists with atrribute time, but times aren't equal

    - by virgula24
    I gonna try to describe my problem the best i can. I have two lists, one with audio frames and other with color frames (not relevant). Both of them have timestamps, they were captured at the same moment but at different instants. So, i have like this: index COLOR AUDIO 0 841 846 1 873 897 2 905 948 3 940 1000 the frames start at high numbers because they were captured and then trimmed to specific parts, but im shot, frame 0 is synced with only 5ms apart(timestamp in ms). On every case i have, the audio frames count is less than the color count. I need to make them have the same count. The stating frames may be coloraudio, color

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  • Normalize database or not? Read only MyISAM table, performance is the main priority (MySQL)

    - by hello
    I'm importing data to a future database that will have one, static MyISAM table (will only be read from). I chose MyISAM because as far as I understand it's faster for my requirements (I'm not very experienced with MySQL / SQL at all). That table will have various columns such as ID, Name, Gender, Phone, Status... and Country, City, Street columns. Now the question is, should I create tables (e.g Country: Country_ID, Country_Name) for the last 3 columns and refer to them in the main table by ID (normalize...[?]), or just store them as VARCHAR in the main table (having duplicates, obviously)? My primary concern is speed - since the table won't be written into, data integrity is not a priority. The only actions will be selecting a specific row or searching for rows that much a certain criteria. Would searching by the Country, City and/or Street columns (and possibly other columns in the same search) be faster if I simply use VARCHAR?

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  • Self Modifying Python? How can I redirect all print statements within a function without touching sys.stdout?

    - by Fake Name
    I have a situation where I am attempting to port some big, complex python routines to a threaded environment. I want to be able to, on a per-call basis, redirect the output from the function's print statement somewhere else (a logging.Logger to be specific). I really don't want to modify the source for the code I am compiling, because I need to maintain backwards compatibility with other software that calls these modules (which is single threaded, and captures output by simply grabbing everything written to sys.stdout). I know the best option is to do some rewriting, but I really don't have a choice here. Edit - Alternatively, is there any way I can override the local definition of print to point to a different function? I could then define the local print = system print unless overwritten by a kwarg, and would only involve modify a few lines at the beginning of each routine.

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  • Commonly use Utility methods in projects

    - by Newbie
    In many projects, we come across various utility methods, e.g. Email validation Convert from dd/mm/yyyy to mm/dd/yyyy or other date formats I would like to know as what are the varoius common utility method that we genrally use? I know that some methods are project specific but many will be common. I searched in net to get a list of as much as possible but none I found to be very informative. Could you please help? Well I am more interested in the method behaviour and not in their implementation. If I can get the method names and what it does e.g. ConvertMMDDYYYY to ConvertDDMMYYYY it will server my purpose. Thanks

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  • Generate multiple attribute?

    - by acidzombie24
    ATM i cant quiet imagine how this will work. I'm sure it can be done. I notice a pattern use in my attribute where i always use 3 specific attributes together. Take the below as an example [MyAttr(4, @"a"), MyAttr(41, "b"), MyAttr(45, "ab")] Mine is much more complicated but i would like to define one attribute with more params to generate the data above. How might i do that? Lets say my one attribute will look like this MyAttr2(4, 41, "a", "b"); //4+41=45, "a"+"b" = "ab" How might i generate the 3 MyAttr to apply to a class using MyAttr2?

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  • Android HTTP get methods

    - by Nick
    I have written a number of applications for blackberry and am just starting in Android. It seems to me that android has a lot more built in functions. I am starting by recreating some of my BB apps on Android and on one I take a few xml sites and parse them out. On blackberry I implemented this by creating a class that extended a thread. I would construct a new instance of this class with the parameters of my http request and it would call a function back in my main class, sending it the results. I am tempted to reuse my code, but am curious if android has something better built in. I have been looking at the handler class as well as possible using a service. Bascially, I would like to start a new thread that will return a document of a specific url. Thanks!

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  • How to enable real time CSS editing in chrome?

    - by narayanpatra
    I have seem a lot of videos in which developers changing CSS on the fly in chrome. I tried the same thing but chrome dod not allow me to change the code. I can't write on the style sheet. Is there any specific setting to do this? Kindly help. EDIT: To edit the css, I right clock on an element, select inspect element. It will open the console. I select the id of the element and go to style.css in resource and try to change the css. It do not allow me to write there.

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  • A way to search form table in MySQL database.

    - by Eugene
    I looked for a way to scan database for a specific table. For example i have: Database: system_ultimate Table: system_settings And let us say, that one doesn't know precise name of the table. He only knows, that it is some how connected to word settings. How could he search for that table name then? I understand, that usually people who develop know, what they develop, but I'm trying to get hang of MVC and I'm trying to stay as far away as possible from direct communication with table using the name. I know, that to see all tables I could use SHOW TABLES;

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  • How to combine two 32-bit integers into one 64-bit integer?

    - by Bei337
    I have a count register, which is made up of two 32-bit unsigned integers, one for the higher 32 bits of the value (most significant word), and other for the lower 32 bits of the value (least significant word). What is the best way in C to combine these two 32-bit unsigned integers and then display as a large number? In specific: leastSignificantWord = 4294967295; //2^32-1 printf("Counter: %u%u", mostSignificantWord,leastSignificantWord); This would print fine. When the number is incremented to 4294967296, I have it so the leastSignificantWord wipes to 0, and mostSignificantWord (0 initially) is now 1. The whole counter should now read 4294967296, but right now it just reads 10, because I'm just concatenating 1 from mostSignificantWord and 0 from leastSignificantWord. How should I make it display 4294967296 instead of 10?

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  • Data access layer design

    - by Sam
    I have a web app and a console application accessing a db. The db has 2 tables (A, B) one of which (A) is specific to the web app. When writing a data access layer, what is the best way to do it? Technically data access layer should provide access to all the data accessible. In doing so, methods to interact with A are exposed to the console application if we have single access layer. Does creating 2 access layers to 2 table in the same database makes any sense? What is a good way to do it?

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  • Change URL of a saved HTML file

    - by Paul Camilleri
    I am new to HTML so this question might sound a bit lame. Anyways I have a saved webpage on my desktop that when i open it in google chrome i want it to show a specific URL instead of its current location. Any ideas how i might get this to work? I tried using the history.pushState but i have no idea why it is not working. I created a simple page for now to test it: <html> <head> <script> function setURL() { history.pushState("Test","page2", "www.test.com"); } </script> </head> <body> <button type="button" onclick="setURL()">Set Url</button> </body> </html> Any help would be greatly appreciated. Thank you

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  • Resource grouping? people with the same skill?

    - by crick3r
    Let's say I have 4 people. Sometimes anyone can do a task, but sometimes they are specific. I would like to group people by skill. Is there any way I can do that? Right now, I have something like this: Resources: SkillA=3, GuyA=1, GuyB=1, GuyC=1 Task A <= SkillA Anyone can do it Task B <= SkillA, GuyB Only B can do it, but I also allocate the skill just to be sure I don't allocate more than 3 people at the same time. My problem with this approach is that sometimes GuyA is on holidays, but I can't reduce SkillA from 3 to 2 in that period.. Any tips?

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  • jQuery: Replace strings with .each()

    - by Warrantica
    I want a function that replace each li with an image. This is my code: $(document).ready(function(){ var tmphref; var tmpname; var str = '<a href="' + tmphref + '"><img src="http://www.somesite.com/a/' + tmpname[1] + '/avatar-small.jpg /></a>'; $('#somediv li a').each(function(){ tmphref = $(this).attr("href"); tmpname = /http\:\/\/(\w+)\.somesite\.com\//.exec(tmphref); $(this).parent().replaceWith(str); }); }); The image is in this specific path: www.somesite.com/a/username/avatar-small.jpg The code above doesn't work. Any ideas? Thank you in advance.

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  • Can a parser tell the lexer to ignore a newline?

    - by chollida
    I'm writing a preprocessor for my language. In the preprocessor I've output a line that wasn't in the source file. This causes any error messages that Anltr creates to be incremented by one line. The Lexer handles the line count so I'm wondering if there is a way for the parser to tell the lexer to decrement the line count, or to ignore a specific newline. I'm also open to other suggestions on how to work around this. The only constraint I have is putting the extra line inline with the existing code. I'd prefer to keep it on it's own line to keep my parsing sane.

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  • Set a tab page on lload event of a form

    - by tanu
    i have a form with many tabs on it. I want to set a specific tab page to show on load of the form everytime i load the form I used TabPageControl1.SelectedTab=MyTabPage; but the value of selectedtab is null. It is throwing an exception that reference not set to an object. private void PreferencesForm_Load(object sender, EventArgs e) { this.cbxCustomDataType.DrawMode = DrawMode.OwnerDrawFixed; this.cbxCustomDataType.DrawItem += new DrawItemEventHandler(cbxCustomDataType_DrawItem); this.cbxColumnDataType.DrawMode = DrawMode.OwnerDrawFixed; this.cbxColumnDataType.DrawItem += new DrawItemEventHandler(cbxColumnDataType_DrawItem); GetProjectDetails(); this.preferencesTabControl.SelectedTab= tpCompareUpdate; }

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