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Ruby: Easiest Way to Filter Hash Keys?
...with just the choices in it.
choices = params.select { |key, value| key.to_s.match(/^choice\d+/) }
or you can use delete_if and modify the existing Hash e.g.
params.delete_if { |key, value| !key.to_s.match(/choice\d+/) }
or if it is just the keys and not the values you want then you can do:
p...
What is an existential type?
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@Kannan_Goundan, I'd like to know what makes you say Java wildcards are a very limited version of this. Do you know you could implement your first runAllCompilers example function in pure Java (with a helper function to retrieve (gi...
What jsf component can render a div tag?
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answered Sep 15 '11 at 1:32
jack jinjack jin
1,08988 silver badges1010 bronze badges
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Apply .gitignore on an existing repository already tracking large number of files
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32
As specified here You can update the index:
git update-index --assume-unchanged /path/to/file
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What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
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232
votes
public static bool In<T>(this T source, params T[] list)
{
if(null==...
How to split a sequence into two pieces by predicate?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
How to retrieve an element from a set without removing it?
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next(iter(your_list or []), None) to handle None sets and empty sets
– MrE
Jul 31 '18 at 14:22
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Is pass-by-value a reasonable default in C++11?
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Luc DantonLuc Danton
32.6k55 gold badges6363 silver badges109109 bronze badges
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Java8 Lambdas vs Anonymous classes
... comment by a compiler engineer: habrahabr.ru/post/313350/comments/#comment_9885460
– ZhekaKozlov
Jun 3 '17 at 3:49
@Z...
What is SQL injection? [duplicate]
... data that they shouldn't be allowed to do.
Example in PHP:
$password = $_POST['password'];
$id = $_POST['id'];
$sql = "UPDATE Accounts SET PASSWORD = '$password' WHERE account_id = $id";
Now suppose the attacker sets the POST request parameters to "password=xyzzy" and "id=account_id" resulting ...