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Why do we need the “event” keyword while defining events?
...to private, so that only the containing class can invoke the event or override all the methods contained in it. The -= and += operators can still be invoked on an event from outside the class defining it (they get the access modifier you wrote next to the event).
You can also override the way -= and...
Multiprocessing vs Threading Python [duplicate]
...is usually straightforward
Takes advantage of multiple CPUs & cores
Avoids GIL limitations for cPython
Eliminates most needs for synchronization primitives unless if you use shared memory (instead, it's more of a communication model for IPC)
Child processes are interruptible/killable
Python mult...
Calling shell functions with xargs
...ould be simplified to
bash -c 'echo_var "{}"'
moving the {} directly inside it. But it's vulnerable to command injection as pointed out by @Sasha.
Here is an example why you should not use the embedded format:
$ echo '$(date)' | xargs -I {} bash -c 'echo_var "{}"'
Sun Aug 18 11:56:45 CDT 2019
...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
...to take advantage of the new auto layout features of iOS 6 while still providing compability with older devices on earlier versions of iOS?
...
IntelliJ and Tomcat…changed files are not automatically recognized by Tomcat
...
This cannot be done if you deploy a war with IntelliJ IDEA. However, it can be if you deploy an exploded war. In IDEA:
open your Tomcat Run/Debug configuration (Run > Edit Configurations)
Go to the "Deployment" tab
In the "Deploy at Server Startup" section, remove (if prese...
.rar, .zip files MIME Type
...
multipart/x-zip is a valid mimetype for .zip as well ( PKZIP archive )
– Sam Vloeberghs
Mar 4 '13 at 13:52
13
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Convert PDF to clean SVG? [closed]
...dia to convert PDF to SVG.
http://inkscape.org/
They even have a handy guide on how to do so!
http://en.wikipedia.org/wiki/Wikipedia:Graphic_Lab/Resources/PDF_conversion_to_SVG#Conversion_with_Inkscape
share
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__FILE__, __LINE__, and __FUNCTION__ usage in C++
...One never gets enough surprises out of C++ :)
Edit: @Jonathan Leffler provides some more good use-cases in the comments:
Messing with #line is very useful for pre-processors that want to keep errors reported in the user's C code in line with the user's source file. Yacc, Lex, and (more at home ...
Edit the root commit in Git?
...
@Cupcake: Did you test the old version of the command? It should work fine. The amend is changing the commit message only so the old and new root commits introduce exactly the same changes so the old root commit is skipped automatically...
dismissModalViewControllerAnimated deprecated
...d in the 2012 WWDC Session 236 - The Evolution of View Controllers on iOS Video. Essentially, view controllers presented by this API are no longer always modal, and since they were adding a completion handler it was a good time to rename it.
In response to comment from Marc:
What's the best way...