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Compiling with g++ using multiple cores
...is the compiler flag to allow g++ to spawn multiple instances of itself in order to compile large projects quicker (for example 4 source files at a time for a multi-core CPU)?
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How can I create a two dimensional array in JavaScript?
...o run .map. Remember that Array will not allocate the positions until you order it to through .fill or direct value assignment.
var arr = Array(2).fill(null).map(() => Array(4));
arr[0][0] = 'foo';
console.info(arr);
Follow up
Here's a method that appears correct, but has issues...
How to join (merge) data frames (inner, outer, left, right)
...rge on multiple columns by giving by a vector, e.g., by = c("CustomerId", "OrderId").
If the column names to merge on are not the same, you can specify, e.g., by.x = "CustomerId_in_df1", by.y = "CustomerId_in_df2" where CustomerId_in_df1 is the name of the column in the first data frame and Custom...
Validating IPv4 addresses with regexp
...ress. Anyone that wishes to edit this answer, please comment first here in order to avoid problems like these - I usually reply pretty fast. Always looking for a shorter/better solution of course.
– Danail Gabenski
Dec 25 '19 at 6:16
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Facebook Android Generate Key Hash
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In order to generate key hash you need to follow some easy steps.
1) Download Openssl from: here.
2) Make a openssl folder in C drive
3) Extract Zip files into this openssl folder created in C Drive.
4) Copy the File debug....
why is plotting with Matplotlib so slow?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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PHP namespaces and “use”
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If you need to order your code into namespaces, just use the keyword namespace:
file1.php
namespace foo\bar;
In file2.php
$obj = new \foo\bar\myObj();
You can also use use. If in file2 you put
use foo\bar as mypath;
you need to use...
nginx error connect to php5-fpm.sock failed (13: Permission denied)
... socket, if one is used. In Linux, read/write
; permissions must be set in order to allow connections from a web server. Many
; BSD-derived systems allow connections regardless of permissions.
; Default Values: user and group are set as the running user
; mode is set to 0660
;listen...
Howto: Clean a mysql InnoDB storage engine?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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What is the quickest way to HTTP GET in Python?
... @JoeBlow remember that you must import the external libraries in order to use them
– MikeVelazco
Feb 8 '17 at 22:34
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