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How to convert std::string to lower case?
...ΕΥΣ";
icu::UnicodeString someUString( someString, "UTF-8" );
// Setting the locale explicitly here for completeness.
// Usually you would use the user-specified system locale,
// which *does* make a difference (see ı vs. i above).
std::cout << someUString.toLower( "el_G...
round() for float in C++
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Boost offers a simple set of rounding functions.
#include <boost/math/special_functions/round.hpp>
double a = boost::math::round(1.5); // Yields 2.0
int b = boost::math::iround(1.5); // Yields 2 as an integer
For more information, see th...
sed: print only matching group
...> bla 1 2 3.4" | cut -d " " -f 6-7
Will result in output of:
2 3.4
-d sets the delimiter
-f selects the range of 'fields' to output, in this case, it's the 6th through 7th chunks of the original string. You can also specify the range as a list, such as 6,7.
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Pointer expressions: *ptr++, *++ptr and ++*ptr
...p is the address of a char; p tells us where in memory there is some space set aside to hold a char.
The statement also initializes p to point to the first character in the string literal "Hello". For the sake of this exercise, it's important to understand p as pointing not to the entire string, ...
Passing a single item as IEnumerable
Is there a common way to pass a single item of type T to a method which expects an IEnumerable<T> parameter? Language is C#, framework version 2.0.
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What is the shortcut to Auto import all in Android Studio?
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For Windows/Linux, you can go to File -> Settings -> Editor -> General -> Auto Import -> Java and make the following changes:
change Insert imports on paste value to All
markAdd unambigious imports on the fly option as checked
On a Mac, do the same t...
How can I determine whether a 2D Point is within a Polygon?
I'm trying to create a fast 2D point inside polygon algorithm, for use in hit-testing (e.g. Polygon.contains(p:Point) ). Suggestions for effective techniques would be appreciated.
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How can I delete Docker's images?
I've the following images:
17 Answers
17
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How can I easily fixup a past commit?
...n commit.
NOTE: This script is Windows-specific; it looks for git.exe and sets the GIT_EDITOR environment variable using set. Adjust this as needed for other operating systems.
Using this script I can implement precisely the 'fix broken sources, stage fixes, run git fixup ' workflow I asked for:
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Check if an apt-get package is installed and then install it if it's not on Linux
...u 12.04 ) returns 0, causing all sorts of trouble on my jenkins build node setup script! dpkg -s returns 0 on package installed, and 1 on package not installed.
– Therealstubot
Aug 21 '13 at 21:04
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