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How does the MapReduce sort algorithm work?
One of the main em>x m>amples that is used in demonstrating the power of MapReduce is the Terasort benchmark . I'm having trouble understanding the basics of the sorting algorithm used in the MapReduce environment.
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
...ng an MD5 hash less CPU intensive than SHA-1 or SHA-2 on "standard" laptop m>x m>86 hardware? I'm interested in general information, not specific to a certain chip.
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How to make URL/Phone-clickable UILabel?
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You can use a UITem>x m>tView and select Detection for Links, Phone Numbers and other things in the inspector.
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What is the difference between MacVim and regular Vim?
I'm reasonably new to OS m>X m>, but I'm familiar with Vim from using it in various *nim>x m> systems. I've seen many people recommend running MacVim over Vim in the terminal. Can anyone tell me what differences there are between MacVim and regular Vim?
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The Ruby %r{ } em>x m>pression
...s equivalent to the /.../ notation, but allows you to have '/' in your regem>x m>p without having to escape them:
%r{/home/user}
is equivalent to:
/\/home\/user/
This is only a syntam>x m> commodity, for legibility.
Edit:
Note that you can use almost any non-alphabetic character pair instead of '{}'.
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Why would introducing useless MOV instructions speed up a tight loop in m>x m>86_64 assembly?
...tutorial shows how branch prediction buffers work. The cache buffer is indem>x m>ed by the lower portion of the address of the branch instruction. This works well unless two important uncorrelated branches share the same lower bits. In that case, you end-up with aliasing which causes many mispredicted ...
The tilde operator in Python
...wos-complement representation of the integer are reversed (as in b <- b m>X m>OR 1 for each individual bit), and the result interpreted again as a twos-complement integer. So for integers, ~m>x m> is equivalent to (-m>x m>) - 1.
The reified form of the ~ operator is provided as operator.invert. To support th...
C++ auto keyword. Why is it magic?
...f auto to mean a deduced type was new with C++11.
At the same time, auto m>x m> = initializer deduces the type of m>x m> from the type of initializer the same way as template type deduction works for function templates. Consider a function template like this:
template<class T>
int whatever(T t) {
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Newline in string attribute
How can I add a line break to tem>x m>t when it is being set as an attribute i.e.:
13 Answers
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Javascript Thousand Separator / string format [duplicate]
... answer below was wrong. There is a built in function for this, which is em>x m>actly what kaiser suggests below: toLocaleString
So you can do:
(1234567.89).toLocaleString('en') // for numeric input
parseFloat("1234567.89").toLocaleString('en') // for string input
The function implemen...