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What is a .pid file and what does it contain?
...elf. You can also use that information to kill the process yourself, using cat filename.pid | xargs kill
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Why is enum class preferred over plain enum?
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enum class Color { red, green, blue }; // enum class
enum Animal { dog, cat, bird, human }; // plain enum
What is the difference between the two?
enum classes - enumerator names are local to the enum and their values do not implicitly convert to other types (like another enum or int)
Plain en...
PHP Difference between array() and []
... Difference is between {} and []. My code
<p>
<label for="post_category"> Cat 1 </label>
<input type="checkbox" name="post_category{first}" value="cat1">
<br />
<label for="post_category{second}"> Cat 2 </label>
<input type="checkbox" name="pos...
Get content uri from file path in android
I know the absolute path of an image (say for eg, /sdcard/cats.jpg). Is there any way to get the content uri for this file ?
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Regarding 'main(int argc, char *argv[])' [duplicate]
...most familiar way is to use the good ol' terminal where an user could type cat file. Here the word cat is a program that takes a file and outputs it to standard output (stdout).
The program receives the number of arguments in argc and the vector of arguments in argv, in the above the argument count...
Is there a conditional ternary operator in VB.NET?
... Visual Basic If announcement
Example:
Dim foo as String = If(bar = buz, cat, dog)
[EDIT]
Prior to 2008 it was IIf, which worked almost identically to the If operator described Above.
Example:
Dim foo as String = IIf(bar = buz, cat, dog)
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How to elegantly rename all keys in a hash in Ruby? [duplicate]
... "apple",
# "b" => "boss",
# "c" => "cat",
# "c1" => "cat 1"
# }
# => {"apple"=>"a val", "boss"=>"b val", "cat"=>{"cat 1"=>"c1 val", "c2"=>"c2 val"}, "d"=>"d val"}
#
class Hash
def rename_keys(map...
String concatenation vs. string substitution in Python
In Python, the where and when of using string concatenation versus string substitution eludes me. As the string concatenation has seen large boosts in performance, is this (becoming more) a stylistic decision rather than a practical one?
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How to convert string to char array in C++?
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Simplest way I can think of doing it is:
string temp = "cat";
char tab2[1024];
strcpy(tab2, temp.c_str());
For safety, you might prefer:
string temp = "cat";
char tab2[1024];
strncpy(tab2, temp.c_str(), sizeof(tab2));
tab2[sizeof(tab2) - 1] = 0;
or could be in this fashion:
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What is a patch in git version control?
... post how you can create a patch (collection of changes you want to communicate and apply to another repo)
(picture from the 2008 blog post "Bioruby with git: how would that work?", published by Jan AERTS)
See also Contributing to Rails with Git as another concrete example.
Nowadays, the GitHub ...