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What is the best way to convert an array to a hash in Ruby
...he constructor was expecting an Array of even length (e.g. ['k1','v1,'k2','v2']). What's worse is that a different Array which flattened to an even length would just silently give us a Hash with incorrect values.
If you want to use Array keys or values, you can use map:
h3 = Hash[a3.map {|key, va...
Undoing a 'git push'
...scm/git/docs/user-manual.html#fixing-mistakes
https://git-scm.com/book/be/v2/Git-Basics-Undoing-Things
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Meaning of 'const' last in a function declaration of a class?
...& fb2) {
const char* v1 = fb1.bar(); // won't compile
const char* v2 = fb2.bar(); // works
}
The idea behind const though is to mark methods which will not alter the internal state of the class. This is a powerful concept but is not actually enforceable in C++. It's more of a promise th...
How should I use git diff for long lines?
...or word boundaries with --word-diff-regex. The default appears to be \S+. (v2.1.1)
– Michael
Oct 2 '14 at 20:55
3
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How to store printStackTrace into a string [duplicate]
...
72
Guava makes this easy with Throwables.getStackTraceAsString(Throwable):
Exception e = ...
Stri...
What is the fastest way to check if a class has a function defined?
I'm writing an AI state space search algorithm, and I have a generic class which can be used to quickly implement a search algorithm. A subclass would define the necessary operations, and the algorithm does the rest.
...
How to check the differences between local and github before the pull [duplicate]
...ike :
+ 2642039b1a4c4d4345a0d02f79ccc3690e19d9b1
+ a4870f9fbde61d2d657e97b72b61f46d1fd265a9
Indicates that there are two commits in my remote tracking branch that haven't been merged into my local branch.
This also works the other way :
git cherry origin/master master
Will show you a list...
Switch Git branch without files checkout
...
In v2.24 git switch is something like a safe git checkout.
Hence I renamed the alias below to git hop for
"hop on the branch without changing worktree"
For the benefit of the reader:
While I think that Charles Bailey's so...
Determine installed PowerShell version
...ll, the actual folder and registry paths (misleadingly?!) reference v1 NOT v2. This is as others here specify, but it was the reason why I was so worried whether I had installed it. My path is ; C:\WINDOWS\system32\windowspowershell\v1.0
– AnneTheAgile
Mar 7 '1...
How to retrieve GET parameters from javascript? [duplicate]
...veloper.mozilla.org/en-US/docs/Web/API/URLSearchParams
https://polyfill.io/v2/docs/features/
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