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heroku - how to see all the logs
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Heroku treats logs as time-ordered streams of events. Accessing *.log files on the filesystem is not recommended in such an environment for a variety of reasons.
First, if your app has more than one dyno then each log file only represents a partial vi...
How to use split?
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According to MDN, the split() method divides a String into an
ordered set of substrings, puts these substrings into an array, and
returns the array.
???? Example
var str = 'Hello my friend'
var split1 = str.split(' ') // ["Hello", "my", "friend"]
var split2 = str.split('') // ["H"...
Remove local git tags that are no longer on the remote repository
...e remote, then it will remain deleted.
Thus you need to type two lines in order:
git tag -l | xargs git tag -d
git fetch --tags
These:
Delete all tags from the local repo. FWIW, xargs places each tag output by "tag -l" onto the command line for "tag -d". Without this, git won't delete anythi...
Length of generator output [duplicate]
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I have a filtered list I expect to be on the order of 2000000000 elements. I can't just use a regular list; I need to use a generator. Now, because of how these elements are being sourced, I can actually run through them pretty efficiently -- I just can't store them bec...
C++ Returning reference to local variable
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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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How to put a line comment for a multi-line command [duplicate]
... the problem is that the backslash must immediately precede the newline in order to escape it, whereas with cmd \ # comment there's whitespace and a comment in between the backslash and the newline.
– Han Seoul-Oh
Feb 24 '17 at 23:20
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Howto: Clean a mysql InnoDB storage engine?
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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...
Where is PATH_MAX defined in Linux?
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