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Is it possible to decrypt MD5 hashes?
Someone told me that he has seen software systems that:
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sql primary key and index
... specific columns. By creating another index on the primary key column and including some other columns with it, you may reach the desired optimization for a query.
For example you have a table with many columns but you are only querying ID, Name and Address columns. Taking ID as the primary key, w...
How do you get the list of targets in a makefile?
...names of targets defined in a makefile. The -p option produces output that includes all targets, but buries them in a lot of other information.
Place the following rule in a makefile for GNU make to implement a target named list that simply lists all target names in alphabetical order - i.e.: invok...
How to git bundle a complete repo
... is the name of bundle file you want to create. Note that --all would not include remote-tracking branches... just like ordinary clone wouldn't either.
Start up the new repo on the destination directory, i.e. get the root commit correctly installed
First, clone is just init + fetch (+ a...
How do you attach and detach from Docker's process?
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reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
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Match whitespace but not newlines
...this is equivalent to “whitespace but not carriage return or newline.” Including both \r and \n in the pattern correctly handles all of Unix (LF), classic Mac OS (CR), and DOS-ish (CR LF) newline conventions.
No need to take my word for it:
#! /usr/bin/env perl
use strict;
use warnings;
us...
Cookie blocked/not saved in IFRAME in Internet Explorer
...>
<POLICY-REF about="/w3c/example-com.p3p#policy1">
<INCLUDE>/</INCLUDE>
<COOKIE-INCLUDE/>
</POLICY-REF>
</POLICY-REFERENCES>
</META>
The <INCLUDE> shows all URIs that will use this policy (in my case, the whole site). The po...
Where are static methods and static variables stored in Java?
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