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difference between each.with_index and each_with_index in Ruby?
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to allow wider usage with various enumerators.
to allow index to start from a number other than 0.
Today, using with_index would be better from the point of view of generality and readability, but from the point of view of speeding up the code, each_with_index runs slightly faster than each.wi...
AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?
... really care to argue with you, but JSONP uses script tags to pull in data from another domain and then sends the result to a callback function. It's a lot harder if the result isn't json.
– jgitter
Feb 14 '14 at 15:40
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Local variables in nested functions
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The nested function looks up variables from the parent scope when executed, not when defined.
The function body is compiled, and the 'free' variables (not defined in the function itself by assignment), are verified, then bound as closure cells to the function, wi...
When should we call System.exit in Java
...lease other resources. If there are no other non-daemon threads, returning from main will shut down the JVM and will call the shutdown hooks.
For some reason shutdown hooks seem to be an undervalued and misunderstood mechanism, and people are reinventing the wheel with all kind of proprietary custo...
How to run multiple Python versions on Windows
...the correct executable. You mention that you've started a python instance, from the command line, by simply typing python.
What this does under Windows, is to trawl the %PATH% environment variable, checking for an executable, either batch file (.bat), command file (.cmd) or some other executable t...
Getting JavaScript object key list
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Note that this is different from for(key in ob)! Object.keys wont list the keys from prototypes, but .. in obj does.
– Albert
Mar 24 '14 at 12:33
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Elevating process privilege programmatically?
...s";
This will cause Windows to behave as if the process has been started from Explorer with the "Run as Administrator" menu command.
This does mean the UAC prompt will come up and will need to be acknowledged by the user: if this is undesirable (for example because it would happen in the middle o...
git: diff between file in local repo and origin
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To view the differences going from the remote file to the local file:
git diff remotename/branchname:remote/path/file1.txt local/path/file1.txt
To view the differences in the other direction:
git diff HEAD:local/path/file1.txt remotename/branchname:re...
Benchmarking small code samples in C#, can this implementation be improved?
... before. That way you know .NET will already have enough memory allocated from the OS for the working set of your function.
Keep in mind that you're making a non-inlined method call for each iteration, so make sure you compare the things you're testing to an empty body. You'll also have to accept...
Global variables in AngularJS
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From the Angular FAQ: Conversely, don't create a service whose only purpose in life is to store and return bits of data.
– Jakob Stoeck
Feb 21 '13 at 15:52
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