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How are multi-dimensional arrays formatted in memory?
In C, I know I can dynamically allocate a two-dimensional array on the heap using the following code:
6 Answers
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Xcode stuck on Indexing
...at I accidentally defined a class as its own subclass. I got no warning or error for this but the compiling got stuck.
class mainClass : mainClass
{
...
}
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How can I wait till the Parallel.ForEach completes
I'm using TPL in my current project and using Parallel.Foreach to spin many threads. The Task class contains Wait() to wait till the task gets completed. Like that, how I can wait for the Parallel.ForEach to complete and then go into executing next statements?
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How to crop an image using PIL?
I want to crop image in the way by removing first 30 rows and last 30 rows from the given image. I have searched but did not get the exact solution. Does somebody have some suggestions?
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Piping command output to tee but also save exit code of command [duplicate]
...=`mktemp`
(mvn clean install $@; echo $?>$f) | tee $logfile
e=`cat $f` #error in variable e
rm $f
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How to automatically start a service when running a docker container?
...at like tail -F
CMD service mysql start && tail -F /var/log/mysql/error.log
This is often preferred when you have a single service running as it makes the outputted log accessible to docker.
Or use foreground command to do this
CMD /usr/bin/mysqld_safe
This works only if there is ...
Copy the entire contents of a directory in C#
...to assemble the parameters for xcopy as string, which introduces plenty of error potential. Also the sample does not mention any error handling for the results of the started process, which i would expect, because contrary to other methods this would fail silently.
– cel sharp
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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...
Writing a list to a file with Python
...hon 2 use 'r' instead of 'rb' when reading the pickle if you get the "ValueError: insecure string pickle"
– queise
Sep 17 '18 at 15:34
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Deny all, allow only one IP through htaccess
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This can be improved by using the directive designed for that task.
ErrorDocument 403 /specific_page.html
Order Allow,Deny
Allow from 111.222.333.444
Where 111.222.333.444 is your static IP address.
When using the "Order Allow,Deny" directive the requests must match either Allow or Deny, i...