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Coffeescript — How to create a self-initiating anonymous function?
...ty or useful information to the other answer.
– still_dreaming_1
Feb 5 '15 at 22:37
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How to change the output color of echo in Linux
... comment, if you are using the echo command, be sure to use the -e flag to allow backslash escapes.
# Continued from above example
echo -e "I ${RED}love${NC} Stack Overflow"
(don't add "\n" when using echo unless you want to add additional empty line)
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In Python, how do I use urllib to see if a website is 404 or 200?
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The getcode() method (Added in python2.6) returns the HTTP status code that was sent with the response, or None if the URL is no HTTP URL.
>>> a=urllib.urlopen('http://www.google.com/asdfsf')
>>> a.getcode()
404...
How can I negate the return-value of a process?
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if (pid == 0)
{
/* Child: execute command using PATH etc. */
execvp(argv[1], &argv[1]);
err_syserr("failed to execute command %s\n", argv[1]);
/* NOTREACHED */
}
/* Parent */
while ((corpse = wait(&status)) > 0)
{
...
Ruby on Rails Callback, what is difference between :before_save and :before_create?
...ttp://pivotallabs.com/activerecord-callbacks-autosave-before-this-and-that-etc/
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What are .a and .so files?
...ories... /usr/lib and /lib have most of them, and there is also the LIBRARY_PATH environment variable.
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Func with out parameter
...egate TResult Func<T1, T2, T3, TResult>(T1 obj1, T2 obj2, T3 obj3)
etc. Delegates as such can have out/ref parameters, so in your case its only a matter of custom implementation by yourself as other answers have pointed out. As to why Microsoft did not pack this by default, think of the shee...
ruby system command check exit code
...formation from this object, including: status code, execution status, pid, etc.
Some useful methods of the $? object:
$?.exitstatus => return error code
$?.success? => return true if error code is 0, otherwise false
$?.pid => created process pid
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What does a b prefix before a python string mean?
...le range of ASCII characters are shown as escape sequences (e.g. \n, \x82, etc.). Inversely, you can use both ASCII characters and escape sequences to define byte values; for ASCII values their numeric value is used (e.g. b'A' == b'\x41')
Because a bytes object consist of a sequence of integers, yo...
Java 8 Stream and operation on arrays
...o convert an array into a Java 8 stream which can then be used for summing etc.
int sum = Arrays.stream(myIntArray)
.sum();
Multiplying two arrays is a little more difficult because I can't think of a way to get the value AND the index at the same time as a Stream operation. Th...