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Get child node index
...ode's index inside of its parent node without iterating over and comparing all children nodes?
11 Answers
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What does value & 0xff do in Java?
... that notation? x isn't a number or a hex number?
– Callat
Dec 5 '16 at 18:56
3
@KazRodgers - The...
How to delete duplicates on a MySQL table?
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The above query deleted all of my records except one :(
– Zolbayar
Aug 10 at 3:21
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javascript set a variable if undefined
... x === 'undefined') ? your_default_value : x;
On newer browsers it's actually safe to write:
var x = (x === undefined) ? your_default_value : x;
but be aware that it is possible to subvert this on older browsers where it was permitted to declare a variable named undefined that has a defined val...
Designing function f(f(n)) == -n
...turn n - 1
else:
return -1 * (n + 1)
Python automatically promotes integers to arbitrary length longs. In other languages the largest positive integer will overflow, so it will work for all integers except that one.
To make it work for real numbers you need to replace the n ...
Right to Left support for Twitter Bootstrap 3
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in every version of bootstrap,you can do it manually
set rtl direction to your body
in bootstrap.css file, look for ".col-sm-9{float:left}" expression,change it to float:right
this do most things that you want for rtl
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Why do you not use C for your web apps?
...t a C program correct and secure. That care means that you need to have really good people writing your programs. That means you pay more.
Also, C doesn't have the benefit of drawing from an enormous single standard library of functionality as .NET (and the other major web-centric platforms) ha...
Why do I need 'b' to encode a string with Base64?
...-z, 0-9, +, /* so it can be transmitted over channels that do not preserve all 8-bits of data, such as email.
Hence, it wants a string of 8-bit bytes. You create those in Python 3 with the b'' syntax.
If you remove the b, it becomes a string. A string is a sequence of Unicode characters. base64 ha...
How to define a function in ghci across multiple lines?
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For guards (like your example), you can just put them all on one line and it works (guards do not care about spacing)
let abs n | n >= 0 = n | otherwise = -n
If you wanted to write your function with multiple definitions that pattern match on the arguments, like this:
fac...
Why is debugging better in an IDE? [closed]
...hat an IDE debugger will give you over trace messages in code:
View the call stack at any point in time, giving you a context for your current stack frame.
Step into libraries that you are not able to re-compile for the purposes of adding traces (assuming you have access to the debug symbols)
Chan...