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What is an .axd file?

... you deploy it on the server. Simply put the ScriptResource.AXD contains all of the clientside javascript routines for Ajax. Just because you include a scriptmanager that loads a script file it will never appear as a ScriptResource.AXD - instead it will be merely passed as the .js file you send if...
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What exactly does an #if 0 … #endif block do?

...entire thing. And the #if 0s will nest with each other, like so: #if 0 pre_foo(); #if 0 foo(); bar(x, y); /* x must not be NULL */ baz(); #endif quux(); #endif Although of course this can get a bit confusing and become a maintenance headache if not commented properly. ...
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Difference between addSubview and insertSubview in UIView class

...array then add in View'slayer - (void)addSubview:(UIView *)subview { [_subviews addObject:subview]; [_layer addSublayer:subview.layer]; } } 2.While insertSubview add your view as subview then call [_layer insertSublayer:subview.layer atIndex:index]; - (void)insertSubview:(UIView *)subv...
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Facebook share button and custom text [closed]

...cebook" href="http://www.facebook.com/sharer.php?s=100&p[title]=YOUR_TITLE&p[summary]=YOUR_SUMMARY&p[url]=YOUR_URL&p[images][0]=YOUR_IMAGE_TO_SHARE_OBJECT" target="_blank"> <span> <img width="14" height="14" src="'icons/fb.gif" alt="Facebook" /> Facebook ...
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What's wrong with overridable method calls in constructors?

...ohibit it: There are a few more restrictions that a class must obey to allow inheritance. Constructors must not invoke overridable methods, directly or indirectly. If you violate this rule, program failure will result. The superclass constructor runs before the subclass constructor, so the overr...
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Why does viewWillAppear not get called when an app comes back from the background?

... In other words, if someone looks at another application or takes a phone call, then switches back to your app which was earlier on backgrounded, your UIViewController which was already visible when you left your app 'doesn't care' so to speak -- as far as it is concerned, it's never disappeared and...
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How can I specify working directory for popen

...wd, import os and define cwd using this: os.path.dirname(os.path.realpath(__file__)) share | improve this answer | follow | ...
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Possible to perform cross-database queries with PostgreSQL?

...no longer supported, but if you need to do this in a pre-2013 Postgres installation, there is a function called dblink. I've never used it, but it is maintained and distributed with the rest of PostgreSQL. If you're using the version of PostgreSQL that came with your Linux distro, you might need to...
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Getting multiple keys of specified value of a generic Dictionary?

...e, perhaps maintain two dictionary mapping key->value and value->List_of_keys. If you do the latter you will trade storage for look up speed. It wouldn't take much to turn @Cybis example into such a data structure. s...
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What methods of ‘clearfix’ can I use?

...rt for oldIE, the solution can be simplified to one css statement. Additionally, using display: block (instead of display: table) allows margins to collapse properly when elements with clearfix are siblings. .container::after { content: ""; display: block; clear: both; } This is the most mo...