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Check if a program exists from a Makefile
...= $(foreach exec,$(EXECUTABLES),\
$(if $(shell which $(exec)),some string,$(error "No $(exec) in PATH")))
Note the use of the := assignment operator that is required in order to force immediate evaluation of the RHS expression. If your Makefile changes the PATH, then instead of the last li...
Count the number of occurrences of a character in a string in Javascript
I need to count the number of occurrences of a character in a string.
33 Answers
33
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How can I have a newline in a string in sh?
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The solution is to use $'string', for example:
$ STR=$'Hello\nWorld'
$ echo "$STR" # quotes are required here!
Hello
World
Here is an excerpt from the Bash manual page:
Words of the form $'string' are treated specially. The word expands to
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Determine if running on a rooted device
...tMethod3();
}
private static boolean checkRootMethod1() {
String buildTags = android.os.Build.TAGS;
return buildTags != null && buildTags.contains("test-keys");
}
private static boolean checkRootMethod2() {
String[] paths = { "/system/app/Superuser.a...
Using Font Awesome icon for bullet points, with a single list item element
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You don't need the extra markup: li:before can have a different font-family than the li itself.
– cimmanon
Sep 17 '12 at 23:48
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T-SQL Cast versus Convert
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Convert has a style parameter for date to string conversions.
http://msdn.microsoft.com/en-us/library/ms187928.aspx
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What is the best way to stop people hacking the PHP-based highscore table of a Flash game
... and the flash frontend. The checksum above was created by prepending the string "secret" to the score "500", and running it through md5sum.
Although this system will prevent a user from posting arbitrary scores, it does not prevent a "replay attack", where a user reposts a previously calculated s...
Regular expression to match URLs in Java
... tested successfully within RegexBuddy. However, when I copied it as Java String flavor and pasted it into Java code, it does not work. The following class prints false :
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google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...ce.h
#ifndef FOOINTERFACE_H_
#define FOOINTERFACE_H_
#include <string>
namespace seamless {
class FooInterface {
public:
virtual ~FooInterface() {}
public:
virtual std::string getArbitraryString() = 0;
};
} // namespace seamless
#endif // FOOINTER...
SQL: IF clause within WHERE clause
... Table
WHERE OrderNumber LIKE '%' + @OrderNumber
END
3) Using a long string, compose your SQL statement conditionally, and then use EXEC
The 3rd approach is hideous, but it's almost the only think that works if you have a number of variable conditions like that.
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