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What is the difference between Lisp-1 and Lisp-2?

...ues, and those values can be either "regular" or functions. Lisp2 has (at least) two namespaces (symbols have a slot for their a function value and one for a regular value). So, in Lisp2, you can have a function named foo and a value named foo, whereas in Lisp1, the name foo can refer only to a si...
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How do you parse and process HTML/XML in PHP?

...ormation about the state of any scraper. Regular Expressions Last and least recommended, you can extract data from HTML with regular expressions. In general using Regular Expressions on HTML is discouraged. Most of the snippets you will find on the web to match markup are brittle. In most case...
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Is there any way to kill a Thread?

... Note about this answer: at least for me (py2.6), I had to pass None instead of 0 for the res != 1 case, and I had to call ctypes.c_long(tid) and pass that to any ctypes function rather than the tid directly. – Walt W ...
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What is the benefit of zerofill in MySQL?

...ncern, and absolutely not something that belongs at the database-level; at least not if you're using the database to back a piece of software. Be aware that this can cause problems - if you parse a value with a leading zero as an integer, many parsers will regard the value as octal, which is probabl...
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Set custom HTML5 required field validation message

...ight on JavaScript, jQuery does it for you. That regex seems to be fine(at least it block your testing@.com! haha) As you can see on fiddle, I make an extra validation of submit form event(this goes on document.ready too): $("#validation").on("submit", function(e) { for (var i = 0; i < e.ta...
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What is an unsigned char?

...e using character types as numbers, use: signed char, which gives you at least the -127 to 127 range. (-128 to 127 is common) unsigned char, which gives you at least the 0 to 255 range. "At least", because the C++ standard only gives the minimum range of values that each numeric type is required...
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Add a CSS class to

...t; 'Editing...' }. This'll go after the button name. It should work, or at least it's documented as that. – Srdjan Pejic Mar 15 '11 at 18:13 3 ...
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How to force use of overflow menu on devices with menu button

...Action values and several combinations and none of them does the trick (at least on the emulator). The overflow menu on the action bar only shows up if I emulate a device without a menu button. I want to see that vertical ellipsis and have overflowing items show up there on devices with a menu butt...
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Disable a Maven plugin defined in a parent POM

..."correct" i.e. it works it should be noted that it's an unspecified (or at least undocumented) feature. There's no official phase called 'none'. So, you might as well put 'foo' there. – Marcel Stör Jan 9 '13 at 8:06 ...
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How can I select rows with most recent timestamp for each key value?

... This is faster than other answers, at least in my case. – rain_ Sep 6 '17 at 7:51 ...