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What are the differences between various threading synchronization options in C#?
... member object of your class.
Monitors
lock(obj) is implemented internally using a Monitor. You should prefer lock(obj) because it prevents you from goofing up like forgetting the cleanup procedure. It 'idiot-proof's the Monitor construct if you will.
Using Monitor is generally preferred over m...
What's “this” in JavaScript onclick?
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Yea... you didn't really answer the question :-/ nothing personal!
– Dave
Oct 23 '12 at 10:48
1
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iPhone 5 CSS media query
...Keep in mind it reacts the iPhone 5, not to the particular iOS version installed on said device.
To merge with your existing version, you should be able to comma-delimit them:
@media only screen and (max-device-width: 480px), only screen and (min-device-width: 560px) and (max-device-width: 1136px)...
PostgreSQL function for last inserted ID
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( tl;dr : goto option 3: INSERT with RETURNING )
Recall that in postgresql there is no "id" concept for tables, just sequences (which are typically but not necessarily used as default values for surrogate primary keys, with the SERIAL pseudo-type).
If you are interested in g...
How to send an email with Python?
... family reunion'
# me == the sender's email address
# family = the list of all recipients' email addresses
msg['From'] = me
msg['To'] = ', '.join(family)
msg.preamble = 'Our family reunion'
# Assume we know that the image files are all in PNG format
for file in pngfiles:
# Open the files in bin...
Change Author template in Android Studio
...de Templates -> Includes -> File Header prepend the #set() function call, for example:
#set( $USER = "Your name" )
/**
* Created by ${USER} on ${DATE}.
*/
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Save Screen (program) output to a file
I need to save the whole output of Screen to a file to check later all the content.
11 Answers
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jQuery: Check if div with certain class name exists
Using jQuery I'm programmatically generating a bunch of div 's like this:
18 Answers
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How do I kill background processes / jobs when my shell script exits?
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but can also be used to execute something if the shell exits:
trap "killall background" EXIT
It's a builtin, so help trap will give you information (works with bash). If you only want to kill background jobs, you can do
trap 'kill $(jobs -p)' EXIT
Watch out to use single ', to prevent the sh...
XML Schema (XSD) validation tool? [closed]
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After some research, I think the best answer is Xerces, as it implements all of XSD, is cross-platform and widely used. I've created a small Java project on github to validate from the command line using the default JRE parser, which is normally Xerces. This can be used on Windows/Mac/Linux.
The...