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In JavaScript, why is “0” equal to false, but when tested by 'if' it is not false by itself?
...y do "0" == false, both sides are being converted to numbers, and then the comparison is performed.
When you do: if ("0") console.log("ha"), the string value is being tested. Any non-empty string is true, while an empty string is false.
Equal (==)
If the two operands are not of the same ty...
Expanding a parent to the height of its children
...lax. One thing is claiming overlay isn't supported outside Webkit. Another completely different is to say it doesn't exist at all. Please, RTFM first. ;)
– Alba Mendez
Jul 11 '12 at 20:33
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Reason for Column is invalid in the select list because it is not contained in either an aggregate f
... @davidblaine, MySQL has a function GROUP_CONCAT() for that. dev.mysql.com/doc/refman/5.5/en/… But in standard SQL, each column should contain only one value. That's fundamental to relational theory too.
– Bill Karwin
Dec 22 '12 at 16:45
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Read environment variables in Node.js
...sons. Only variables that begin with REACT_ENV_ are available. See: github.com/facebookincubator/create-react-app/blob/master/…
– Mark Edington
Jul 11 '17 at 12:25
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JavaScript validation for empty input field
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This accepted is actually invalid. The commas in the if statement will cause only the last check to be returned: stackoverflow.com/a/5348007/713874
– Bing
Apr 24 '17 at 21:27
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Alternate FizzBuzz Questions [closed]
... "1 3 5 7")
Return distinct values and their counts (i.e. the list above becomes "1(3) 3(3) 5(2) 7(1)")
Given a string of expressions (only variables, +, and -) and a set of variable/value pairs (i.e. a=1, b=7, c=3, d=14) return the result of the expression ("a + b+c -d" would be -3).
These were f...
How to completely uninstall Visual Studio 2010?
I've been looking to find a CLEAN solution to completely and ultimately remove Visual Studio 2010 from my computer. When you install Visual Studio, it also installs a bunch of programs (about 55) in the add/remove programs panel ( appwiz.cpl ).
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Proper way to exit iPhone application?
...s use of exit as it makes the app appear to have crashed. developer.apple.com/iphone/library/qa/qa2008/qa1561.html
– progrmr
May 6 '10 at 12:47
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Checking for empty arrays: count vs empty
...res the number of elements internally. Check out this answer stackoverflow.com/a/5835419/592454
– elitalon
May 21 '12 at 13:03
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