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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
Is there any difference between :key => "value" (hashrocket) and key: "value" (Ruby 1.9) notations?
5 Answers
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How to send a command to all panes in tmux?
...s with a huge scrollback. However, I want to script a way to send this command to all the panes in the various windows.
7 A...
Difference between a theta join, equijoin and natural join
I'm having trouble understanding relational algebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join?
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Is there a way to cause git-reflog to show a date alongside each entry?
The git-reflog command doesn't by default show a date alongside each entry, which strikes me as a strange oversight; I think this would be very helpful.
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How to try convert a string to a Guid [duplicate]
...id not find the TryParse method for the Guid. I’m wondering how others handle converting a guid in string format into a guid type.
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C++ where to initialize static const
...// No definition for i. (*)
const int foo::j = 4;
(*) According to the standards you must define i outside of the class definition (like j is) if it is used in code other than just integral constant expressions. See David's comment below for details.
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Detect Browser Language in PHP
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why dont you keep it simple and clean
<?php
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
$acceptLang = ['fr', 'it', 'en'];
$lang = in_array($lang, $acceptLang) ? $lang : 'en';
require_once "index_{$lang}.php";
?>
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Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
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You could convert it to an array and then print that out with Arrays.toString(Object[]):
System.out.println(Arrays.toString(stack.toArray()));
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imp...
Finding three elements in an array whose sum is closest to a given number
Given an array of integers, A 1 , A 2 , ..., A n , including negatives and positives, and another integer S. Now we need to find three different integers in the array, whose sum is closest to the given integer S. If there exists more than one solution, any of them is ok.
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How can I pass a list as a command-line argument with argparse?
I am trying to pass a list as an argument to a command line program. Is there an argparse option to pass a list as option?
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