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Reverse a string in Java
I have "Hello World" kept in a String variable named hi .
45 Answers
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How does this giant regex work?
I recently found the code below in one of my directories, in a file called doc.php . The file functions or links to a file manager. It's quite nicely done. Basically, it lists all the files in the current directory, and it lets you change directories.
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Mercurial for Beginners: The Definitive Practical Guide
...e laid out according to the convention of trunk/branches/tags.
The command set is typically hg svn <subcommand> though it aims at being integrated to the point that you don't need the 'svn' part (i.e. it wants to treat a Subversion clone as much as possible like any other Mercurial repository)...
Is there a max array length limit in C++?
... but rather by the hardware.
The first limit (should never be reached) is set by the restrictions of the size type used to describe an index in the array (and the size thereof). It is given by the maximum value the system's std::size_t can take. This data type is large enough to contain the size in...
django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
...le trying to connect to database for mysql. I have also given the database settings that i have used.
22 Answers
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Unix tail equivalent command in Windows Powershell
I have to look at the last few lines of a large file (typical size is 500MB-2GB). I am looking for a equivalent of Unix command tail for Windows Powershell. A few alternatives available on are,
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Why does integer division in C# return an integer and not a float?
Does anyone know why integer division in C# returns an integer and not a float?
What is the idea behind it? (Is it only a legacy of C/C++?)
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Python: print a generator expression?
...on 3 and Python 2.7 is just syntactic sugar around a generator expression. Set comprehensions:
>>> {x*x for x in range(10)}
{0, 1, 4, 81, 64, 9, 16, 49, 25, 36}
>>> set(x*x for x in range(10))
{0, 1, 4, 81, 64, 9, 16, 49, 25, 36}
Dict comprehensions:
>>> dict((x, x*x)...
Is == in PHP a case-sensitive string comparison?
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What is the difference between printf() and puts() in C?
I know you can print with printf() and puts() . I can also see that printf() allows you to interpolate variables and do formatting.
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