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Convert integer to binary in C#
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Convert from any classic base to any base in C#
String number = "100";
int fromBase = 16;
int toBase = 10;
String result = Convert.ToString(Convert.ToInt32(number, fromBase), toBase);
// result == "256"
Supported bases are 2, 8,...
Where is Maven' settings.xml located on mac os?
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I created a symlink to it from ~/.m2: ln -s /usr/share/maven/conf/settings.xml settings.xml
– craig
Dec 3 '12 at 15:57
1
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Difference between Mutable objects and Immutable objects [duplicate]
...ct's data) cannot change after construction. Examples of immutable objects from the JDK include String and Integer.
For example:(Point is mutable and string immutable)
Point myPoint = new Point( 0, 0 );
System.out.println( myPoint );
myPoint.setLocation( 1.0, 0.0 );
Syst...
Batch files - number of command line arguments
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Googling a bit gives you the following result from wikibooks:
set argC=0
for %%x in (%*) do Set /A argC+=1
echo %argC%
Seems like cmd.exe has evolved a bit from the old DOS days :)
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How to convert DOS/Windows newline (CRLF) to Unix newline (LF) in a Bash script?
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You can use tr to convert from DOS to Unix; however, you can only do this safely if CR appears in your file only as the first byte of a CRLF byte pair. This is usually the case. You then use:
tr -d '\015' <DOS-file >UNIX-file
Note that the ...
What does gcc's ffast-math actually do?
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@Andrey: For this example, you go from 7 multiplies down to 3.
– Mysticial
Sep 14 '11 at 17:55
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Reading specific lines only
...-like object thefile (leaving up to the caller whether it should be opened from a disk file, or via e.g a socket, or other file-like stream) and a set of zero-based line indices whatlines, and returns a list, with low memory footprint and reasonable speed. If the number of lines to be returned is h...
How to keep environment variables when using sudo
...t HTTP_PROXY=foof
$ sudo -E bash -c 'echo $HTTP_PROXY'
Here is the quote from the man page:
-E, --preserve-env
Indicates to the security policy that the user wishes to preserve their
existing environment variables. The security policy may return an error
if...
Running a cron job on Linux every six hours
...out
0 */6 * * * /path/to/mycommand
This means every sixth hour starting from 0, i.e. at hour 0, 6, 12 and 18 which you could write as
0 0,6,12,18 * * * /path/to/mycommand
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Make an HTTP request with android
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Here is an article from the official android developer blog on AsyncTask: android-developers.blogspot.com/2010/07/…
– Austyn Mahoney
Aug 17 '10 at 21:44
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