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How exactly does the python any() function work?
...ed as the any function iterates through the values generated one at a time by the generator expression. And, since any short-circuits, it will stop iterating as soon as it sees the first True value. This would be especially handy if you created lst using something like lst = range(-1,int(1e9)) (or x...
delete a.x vs a.x = undefined
...The way that they are the same is that you can't tell if a property exists by testing
if (a.x === undefined)
Which you shouldn't do if you are trying to determine if a property exists, you should always use
// If you want inherited properties
if ('x' in a)
// If you don't want inherited proper...
Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
...here net count against the resource is zero.
Again, this varies somewhat by platform - especially what they call these things, but this should be representative of the concepts and various mechanisms at play.
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Why #egg=foo when pip-installing from git repo
...t says:
The "project name" component of the url suffix "egg=-" is used by pip in its dependency logic to identify
the project prior to pip downloading and analyzing the metadata. The
optional "version" component of the egg name is not functionally
important. It merely provides a human-read...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...
Just tested latency from Java on my Corei5 2.8GHz, only single byte send/received,
2 Java processes just spawned, without assigning specific CPU cores with taskset:
TCP - 25 microseconds
Named pipes - 15 microseconds
Now explicitly specifying core masks, like taskset 1 java Sr...
log4net not working
...thing is to make sure to add the XmlConfigurator attribute to the assembly by placing the following line in your AssemblyInfo.cs:
[assembly: log4net.Config.XmlConfigurator]
Otherwise log4net never activates.
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How to remove/delete a large file from commit history in Git repository?
...ct, then carelessly git commit -a -m ... , and, zap, the repo was bloated by 2.2 gigs. Next time I made some edits, deleted the video file, and committed everything, but the compressed file is still there in the repository, in history.
...
When to use leading slash in gitignore
...es about how patterns are written; it's very likely most were contributed by people who didn't bother to read the documentation nor test things out as you did.
So if that helps: You're right, be confident.
If you see mistakes in collaborative projects such as this, don't hesitate to contribute y...
CURL to access a page that requires a login from a different page
... two separate sessions. Thus when the second command runs, the cookies set by the 1st command are not available; it's just as if you logged in to page a in one browser session, and tried to access page b in a different one.
What you need to do is save the cookies created by the first command:
curl...
How do I get the find command to print out the file size with the file name?
...le. If you have many files (say, over a thousand) you better optimize that by either: find . -name '*.ear' -exec ls -lh {} + \; (GNU extension) or find . -name '*.ear' -print0 | xargs -0 ls -lh. Also you may like to add -type f if you're only interested in files (or add -d to ls if you want dir...