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addEventListener not working in IE8

... Try: if (_checkbox.addEventListener) { _checkbox.addEventListener("click", setCheckedValues, false); } else { _checkbox.attachEvent("onclick", setCheckedValues); } Update:: For Internet Explorer versions prior to IE9, at...
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Does Python support short-circuiting?

...or in operator and, or: Let's first define a useful function to determine if something is executed or not. A simple function that accepts an argument, prints a message and returns the input, unchanged. >>> def fun(i): ... print "executed" ... return i ... One can observe the P...
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Name node is in safe mode. Not able to leave

... Updated my answer as per new distributions, if anyone can help us out in establishing the exact version of apache hadoop since when these deprecations have come into picture, it would be great. – Amar Mar 19 '14 at 19:03 ...
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php $_POST array empty upon form submission

... @ŁukaszBachman How to do that if dataobject is something like........title=something&body=anything. I want to get the vale of title & body. $dataobject["title"] returns empty. In my case $_POST is empty. And the only way to get it using file_get_c...
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MySQL, Check if a column exists in a table with SQL

I am trying to write a query that will check if a specific table in MySQL has a specific column, and if not — create it. Otherwise do nothing. This is really an easy procedure in any enterprise-class database, yet MySQL seems to be an exception. ...
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Which Boost features overlap with C++11?

I put my C++ skills on the shelf several years ago and it seems now, when I need them again, the landscape has changed. 2 A...
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Reload Flask app when template file changes

...lask.run ), it monitors its Python files and automatically reloads the app if its code changes: 10 Answers ...
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How can I correctly prefix a word with “a” and “an”?

...to use "A" or "AN" find the longest matching prefix, and follow its lead. If you didn't discard the empty prefix in step 4, then there will always be a matching prefix (namely the empty prefix), otherwise you may need a special case for a completely-non matching string (such input should be very ra...
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Override setter with arc

...ary as you don't do more than the standard generated setter would do? Only if you add more code to setImageURLString: would you need to override the setter. share | improve this answer | ...
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What is a method that can be used to increment letters?

...t() { const r = []; for (const char of this._nextId) { r.unshift(this._chars[char]); } this._increment(); return r.join(''); } _increment() { for (let i = 0; i < this._nextId.length; i++) { const val = ++this._nextId[i]; if (val >= this._chars.len...