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List comprehension on a nested list?
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Andrew ClarkAndrew Clark
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Joins are for lazy people?
...r who claimed to me that JOINs (SQL) are useless. This is technically true but he added that using joins is less efficient than making several requests and link tables in the code (C# or Java).
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Why can't I define a static method in a Java interface?
...ces can have static methods. They can also have concrete instance methods, but not instance fields.
There are really two questions here:
Why, in the bad old days, couldn't interfaces contain static methods?
Why can't static methods be overridden?
Static methods in interfaces
There was no stro...
How does type Dynamic work and how to use it?
I heard that with Dynamic it is somehow possible to do dynamic typing in Scala. But I can't imagine how that might look like or how it works.
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Convert a byte array to integer in Java and vice versa
I want to store some data into byte arrays in Java. Basically just numbers which can take up to 2 Bytes per number.
8 Answe...
Switch Git branch without files checkout
Is it possible in Git to switch to another branch without checking out all files?
11 Answers
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Git is ignoring files that aren't in gitignore
... git repository that is ignoring image files as well as a few other files, but my .gitignore file only has it ignoring a config.php file. Is there some global ignore file somewhere that I can't seem to find? I have to specify files to add them now, and it's giving me this warning:
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Checkout another branch when there are uncommitted changes on the current branch
Most of the time when I try to checkout another existing branch, Git doesn't allow me if I have some uncommitted changes on the current branch. So I'll have to commit or stash those changes first.
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How can I convert the “arguments” object to an array in JavaScript?
The arguments object in JavaScript is an odd wart—it acts just like an array in most situations, but it's not actually an array object. Since it's really something else entirely , it doesn't have the useful functions from Array.prototype like forEach , sort , filter , and map .
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How does RewriteBase work in .htaccess
...y own words, after reading the docs and experimenting:
You can use RewriteBase to provide a base for your rewrites. Consider this
# invoke rewrite engine
RewriteEngine On
RewriteBase /~new/
# add trailing slash if missing
rewriteRule ^(([a-z0-9\-]+/)*[a-z0-9\-]+)$ $1/ [NC,R=301,L]
T...