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How to split a dos path into its components in Python
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I've been bitten loads of times by people writing their own path fiddling functions and getting it wrong. Spaces, slashes, backslashes, colons -- the possibilities for confusion are not endless, but mistakes are easily made anyway. So I'm a stickler f...
How to check if a string contains only digits in Java [duplicate]
...gex = "\\d+";
As per Java regular expressions, the + means "one or more times" and \d means "a digit".
Note: the "double backslash" is an escape sequence to get a single backslash - therefore, \\d in a java String gives you the actual result: \d
References:
Java Regular Expressions
Java Chara...
Is it bad practice to make a setter return “this”?
...e (including at construction)
you know which fields you need to set at the time you're writing the code, and
there are many different combinations for which fields you want to set.
Alternatives to this method might be:
One mega constructor (downside: you might pass lots of nulls or default valu...
Publish to S3 using Git?
...:
jgit clone amazon-s3://.jgit@git-repos/chef-recipes.git
When it comes time to update it (because jgit doesn’t support merge or pull) you do it in 2 steps:
cd chef-recipes
jgit fetch
git merge origin/master
2 Use FUSE-based file system backed by Amazon S3
Get an Amazon S3 account!
Downlo...
When someone writes a new programming language, what do they write it IN?
... like human beings have, albeit in a comparatively infinitesimal amount of time.
– Gaurav Ojha
Oct 21 '16 at 11:27
Now...
What is the combinatory logic equivalent of intuitionistic type theory?
I recently completed a university course which featured Haskell and Agda (a dependent typed functional programming language), and was wondering if it was possible to replace lambda calculus in these with combinatory logic. With Haskell this seems possible using the S and K combinators, thus making i...
What is the size of an enum in C?
...anguage, an enum is guaranteed to be of size of an int. There is a compile time option (-fshort-enums) to make it as short (This is mainly useful in case the values are not more than 64K). There is no compile time option to increase its size to 64 bit.
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Lock, mutex, semaphore… what's the difference?
... to limit the number of cpu, io or ram intensive tasks running at the same time.
For a more detailed post about the differences between mutex and semaphore read here.
You also have read/write locks that allows either unlimited number of readers or 1 writer at any given time.
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When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
..., but I hope it illustrates the point.
Example 2
Consider Ajax calls. Sometimes you want to initiate one Ajax call after a previous one completes. One way is to make the second call inside a done callback:
$.ajax(...).done(function() {
// executed after first Ajax
$.ajax(...).done(function(...
Updating packages in Emacs
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The conditional prevents refreshing every time I start emacs (I usually only want it to check when I tell it to). It only checks if there are no package archives, which should only be the case the first time I clone my config to a new machine.
–...