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Select N random elements from a List in C#
I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a List<string> .
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Completion block for popViewController
When dismissing a modal view controller using dismissViewController , there is the option to provide a completion block. Is there a similar equivalent for popViewController ?
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JavaScript % (modulo) gives a negative result for negative numbers
According to Google Calculator (-13) % 64 is 51 .
11 Answers
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JavaScript closure inside loops – simple practical example
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Well, the problem is that the variable i, within each of your anonymous functions, is bound to the same variable outside of the function.
ES6 solution: let
ECMAScript 6 (ES6) introduces new let and const keywords that are scoped differently th...
Reading CSV files using C#
...at are shorter than 5 values in another grid. I'm trying to do that like this:
12 Answers
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Does delete on a pointer to a subclass call the base class destructor?
...ass A which uses a heap memory allocation for one of its fields. Class A is instantiated and stored as a pointer field in another class ( class B .
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What is the “hasClass” function with plain JavaScript?
...ry's source code on github or at the source for hasClass specifically in this source viewer.
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How to avoid Dependency Injection constructor madness?
I find that my constructors are starting to look like this:
9 Answers
9
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Print all but the first three columns
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"4...5...6.7.->.8->."
The solution given by larsr in the comments is almost correct:
$ echo '1 2 3 4 5 6 7' |
awk '{for (i=3;i<=NF;i++) $(i-2)=$i; NF=NF-2; print $0}' | tr ' ' '-'
3-4-5-6-7
This is the fixed and parametrized version of larsr solution:
$ echo '1 2 3 4 5 6 7' |
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Git: can I suppress listing of 'modified content'/dirty submodule entries in status, diff, etc?
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There is even a possibility to set the ignore mode for every added submodule within the .gitmodules file.
Just today I encountered this problem and immediately wrote an article in my blog about it after finding a solution: How to ...