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Find size of an array in Perl
...er this to be the standard way to get an array's size.
The second way actually returns the last index of the array, which is not (usually) the same as the array size.
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Volley Android Networking Library
... I had to go to 5 different google results to find the instructions to install their own networking library.
– Gowiem
Aug 28 '13 at 18:19
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How do I split a multi-line string into multiple lines?
...d solution because it does not mess with the line separator explicitly. It all just works with a dedicated API method!
– lpapp
Aug 27 '14 at 15:23
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How to generate a random int in C?
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Note: Don't use rand() for security. If you need a cryptographically secure number, see this answer instead.
#include <time.h>
#include <stdlib.h>
srand(time(NULL)); // Initialization, should only be called once.
int r = rand(); // Returns a pseudo-random integer bet...
Fastest way to check if a string matches a regexp in ruby?
... is the fastest way to check if a string matches a regular expression in Ruby?
7 Answers
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find: missing argument to -exec
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A -exec command must be terminated with a ; (so you usually need to type \; or ';' to avoid interpretion by the shell) or a +. The difference is that with ;, the command is called once per file, with +, it is called just as few times as possible (usually once, but there is a maxi...
How to filter (key, value) with ng-repeat in AngularJs?
...Also you can use ng-repeat with ng-if:
<div ng-repeat="(key, value) in order" ng-if="value > 0">
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
...act so that if you were to try on your own and didn't realize there was an order of operations, then you would get this error. Naturally after adding the primary key data, your foreign key data in the child table must conform to the primary key field in the parent table, otherwise, you will still g...
Downloading a file from spring controllers
...ted, so I left it to the browser to determine the content type of the file by its extension.
– Infeligo
Apr 15 '11 at 7:05
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process.env.NODE_ENV is undefined
...-app-name.js"
Then in your terminal, at the project root, start your app by running:
npm start
The environment variable will then be available in your app as process.env.NODE_ENV, so you could do something like:
if (process.env.NODE_ENV === 'dev') {
// Your dev-only logic goes here
}
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