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How to check if there exists a process with a given pid in Python?
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Sending signal 0 to a pid will raise an OSError exception if the pid is not running, and do nothing otherwise.
import os
def check_pid(pid):
""" Check For the existence of a unix pid. """
try:
os.kill(pid, 0)
except OSError:
retu...
What is the equivalent of MATLAB's repmat in NumPy
I would like to execute the equivalent of the following MATLAB code using NumPy: repmat([1; 1], [1 1 1]) . How would I accomplish this?
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How to Update Multiple Array Elements in mongodb
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this code returns ERROR in pymongo. tehre is error: raise TypeError("%s must be True or False" % (option,)) TypeError: upsert must be True or False
– Vagif
Jun 8 at 12:05
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How do C++ class members get initialized if I don't do it explicitly?
...e object's class does not have a default constructor, it will be a compile error if you do not explicitly initialize it.
For primitive types (pointers, ints, etc), they are not initialized -- they contain whatever arbitrary junk happened to be at that memory location previously.
For references (e....
Check if a variable is of function type
...rence (open your javascript console and reload page, there might be logged error messages). Note: Revision 3 added isFunctionD (based on only typeof == "function") - and it seems to be much faster than Underscore's "fast" version.
– Joel Purra
Feb 2 '12 at 18:3...
How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
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jQuery Event Keypress: Which key was pressed?
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answered Nov 19 '08 at 15:05
Vladimir PrudnikovVladimir Prudnikov
5,49744 gold badges3737 silver badges4848 bronze badges
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How to customize ?
...seinput">El Cucaratcha, for example</button>
<span id="selected_filename">No file selected</span>
<script>
$(document).ready( function() {
$('#falseinput').click(function(){
$("#fileinput").click();
});
});
$('#fileinput').change(function() {
$('#selected_filena...
Check if PHP session has already started
...Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines:
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Determine if code is running as part of a unit test
... test framework.
The reason I need this is because I show a MessageBox on errors. But my unit tests also test the error handling code, and I don't want a MessageBox to pop up when running unit tests.
/// <summary>
/// Detects if we are running inside a unit test.
/// </summary>
public ...