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How to generate a random string in Ruby
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edited Mar 9 '17 at 10:56
community wiki
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PostgreSQL error 'Could not connect to server: No such file or directory'
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Works for me. Feels a bit weird to chown /tmp to _postgres, but hey :)
– wrdevos
May 27 '13 at 14:43
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How to convert integer to string in C? [duplicate]
...array without overflow, unless your compiler is somehow using more than 32-bits for int. When using numbers with greater bitsize, e.g. long with most 64-bit compilers, you need to increase the array size—at least 21 characters for 64-bit types.
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How do I install Python packages on Windows?
...e only one that worked for me. My environment - Python 3.3.1 , Windows 7 64bit, x64 PC. if possible, please upvote this, saves ppl a lot of trouble.
– Quest Monger
May 10 '13 at 1:54
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Convert a Python list with strings all to lowercase or uppercase
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Besides being easier to read (for many people), list comprehensions win the speed race, too:
$ python2.6 -m timeit '[x.lower() for x in ["A","B","C"]]'
1000000 loops, best of 3: 1.03 usec per loop
$ python2.6 -m timeit '[x.upper() for x in ["a","b","c"]]'
1000000 loops, best of 3: 1.04 usec ...
How do I check if the Java JDK is installed on Mac?
...libexec/java_home -V
Matching Java Virtual Machines (2):
1.8.0_51, x86_64: "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home
1.7.0_79, x86_64: "Java SE 7" /Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
To request the JAVA_HOME path of a specif...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...64# ./mysql -ubill -ppass \
--socket=/tmp/mysql-5.5.sock
ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
root@myhost:/home/mysql-5.5.16-linux2.6-x86_64# ./mysql -ubill -ppass \
-h127.0.0.1 --protocol=TCP
ERROR 1045 (28000): Access denie...
JavaScript implementation of Gzip [closed]
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Do we need the <?php.. bit?.. I'm asking because it is passed to decompress method.
– Jus12
Jul 7 '16 at 7:00
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How to take screenshot of a div with JavaScript?
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10 Answers
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What is better, adjacency lists or adjacency matrices for graph problems in C++?
...raph that allows loops:
An adjacency matrix occupies n2/8 byte space (one bit per entry).
An adjacency list occupies 8e space, where e is the number of edges (32bit computer).
If we define the density of the graph as d = e/n2 (number of edges divided by the maximum number of edges), we can find...