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python date of the previous month

... you could use .replace() method: datetime.utcnow().replace(day=1) - timedelta(days=1) – jfs Mar 16 '12 at 6:43 1 ...
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How to split a long regular expression into multiple lines in JavaScript?

... function(reg){ return reg.source; } ).join(''), options); } And now let's rock var r = multilineRegExp([ /^foo/, // we can add comments too /(.*)/, /\bar$/ ]); Since it has a cost, try to build the real regex just once and then use that. ...
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iOS Remote Debugging

...se follow gregers' advice. New answer: Use Weinre. Old answer: You can now use Safari for remote debugging. But it requires iOS 6. Here is a quick translation of http://html5-mobile.de/blog/ios6-remote-debugging-web-inspector Connect your iDevice via USB with your Mac Open Safari on your Mac ...
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How to check if an appSettings key exists?

...ager.AppSettings if (ConfigurationManager.AppSettings[name] != null) { // Now do your magic.. } or string s = ConfigurationManager.AppSettings["myKey"]; if (!String.IsNullOrEmpty(s)) { // Key exists } else { // Key doesn't exist } ...
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Undefined reference to vtable

...ve functionA. The definition for the above functionB. Class C Contains: Now you're writing a Class C in which you are going to derive it from Class A. Now if you try to compile you will get Undefined reference to vtable for Class C as error. Reason: functionA is defined as pure virtual and it...
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Show Youtube video source into HTML5 video tag?

...6616c"></video> Note there seems to some expire stuff. I don't know how long the src string will work. Still testing myself. Edit (July 28, 2011): Note that this video src is specific to the browser you use to retrieve the page source. I think Youtube generates this HTML dynamically (a...
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Is there a way to make ellipsize=“marquee” always scroll?

...l over an item in a list view (like in the Market app), only then does the now-selected text start scrolling. And since this particular TextView isn't focusable or clickable, it will never lose its selection state. Unfortunately, as far as I know there is no way to pre-set the selected state from ...
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Does java have a int.tryparse that doesn't throw an exception for bad data? [duplicate]

...ke this: if (tryParseInt(input)) { Integer.parseInt(input); // We now know that it's safe to parse } EDIT (Based on the comment by @Erk) Something like follows should be better public int tryParse(String value, int defaultVal) { try { return Integer.parseInt(value); } ca...
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Difference between Inheritance and Composition

...ance is java.util.Stack, which currently extends java.util.Vector. This is now considered a blunder. A stack "is-NOT-a" vector; you should not be allowed to insert and remove elements arbitrarily. It should've been composition instead. Unfortunately it's too late to rectify this design mistake, sin...
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How to instantiate a File object in JavaScript?

... Now you can! var parts = [ new Blob(['you construct a file...'], {type: 'text/plain'}), ' Same way as you do with blob', new Uint16Array([33]) ]; // Construct a file var file = new File(parts, 'sample.txt',...