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Extracting the last n characters from a ruby string
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edited Nov 2 '13 at 6:40
nostopbutton
37944 silver badges1313 bronze badges
answered Mar 7 '11 at 4:...
What is size_t in C?
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471
From Wikipedia:
According to the 1999 ISO C standard
(C99), size_t is an unsigned intege...
Sorting a vector of custom objects
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374
A simple example using std::sort
struct MyStruct
{
int key;
std::string stringValue;
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Serialize object to query string in JavaScript/jQuery [duplicate]
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4 Answers
4
Active
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Locate Git installation folder on Mac OS X
...r/local/git by default. See also this answer. However, if you install XCode4, it will install a git version in /usr/bin. To ensure you can easily upgrade from the website and use the latest git version, edit either your profile information to place /usr/local/git/bin before /usr/bin in the $PATH or ...
Converting list to *args when calling function [duplicate]
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204
You can use the * operator before an iterable to expand it within the function call. For example...
C# convert int to string with padding zeros?
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i.ToString().PadLeft(4, '0') - okay, but doesn't work for negative numbers
i.ToString("0000"); - explicit form
i.ToString("D4"); - short form format specifier
$"{i:0000}"; - string interpolation (C# 6.0+)
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How do I combine two data-frames based on two columns? [duplicate]
...final example given in the documentation:
x <- data.frame(k1=c(NA,NA,3,4,5), k2=c(1,NA,NA,4,5), data=1:5)
y <- data.frame(k1=c(NA,2,NA,4,5), k2=c(NA,NA,3,4,5), data=1:5)
merge(x, y, by=c("k1","k2")) # NA's match
This example was meant to demonstrate the use of incomparables, but it illustra...