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variable === undefined vs. typeof variable === “undefined”
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edited Feb 26 '16 at 15:37
answered Jan 18 '11 at 15:10
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What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
...ng wrong:
>>> print "Hello, World!"
File "<stdin>", line 1
print "Hello, World!"
^
SyntaxError: invalid syntax
As for why print became an ordinary function in Python 3, that didn't relate to the basic form of the statement, but rather to how you did mo...
What does ':' (colon) do in JavaScript?
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Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
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edited Sep 26 '17 at 10:58
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A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
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Here's a walkthrough of how I solved this in my in-app purchase library RMStore. I will explai...
How to resize superview to fit all subviews with autolayout?
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The correct API to use is UIView systemLayoutSizeFittingSize:, passing either UILayoutFittingC...
Best way to store a key=>value array in JavaScript?
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That's just what a JavaScript object is:
var myArray = {id1: 100, id2: 200, "tag with spaces": 300};
myArray.id3 = 400;
myArray["id4"] = 500;
You can loop through it using for..in loop:
for (var key in myArray) {
console.log("key " + key + " has value " + myArray[key]);
}
See al...
How do I force files to open in the browser instead of downloading (PDF)?
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13 Answers
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How to remove folders with a certain name
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11 Answers
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