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What does the Subversion status symbol “~” mean?
...t has been replaced by different kind of object.
So perhaps it was originally a single file, but you changed it to a directory, or something along those lines?
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Rake just one migration
...n a single migration that changed and needed to be re-run independently of all other migrations. Fire up the console and do this:
>> require 'db/migrate/your_migrations.rb'
=> ["YourMigrations"]
>> YourMigrations.up
=> etc... as the migration runs
>> YourMigration.down
Mor...
Extract date (yyyy/mm/dd) from a timestamp in PostgreSQL
...swered May 26 '11 at 2:40
James AllmanJames Allman
37.4k99 gold badges5252 silver badges6969 bronze badges
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Getting HTTP code in PHP using curl
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First make sure if the URL is actually valid (a string, not empty, good syntax), this is quick to check server side. For example, doing this first could save a lot of time:
if(!$url || !is_string($url) || ! preg_match('/^http(s)?:\/\/[a-z0-9-]+(.[a-z0-9-]+)*...
The character encoding of the HTML document was not declared
...head:
<meta charset="UTF-8">
the character encoding (which is actually UTF-8) of the html document was not declared
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Press alt + numeric in bash and you get (arg [numeric]) what is that?
...hat is significant. If you pass a negative argument to a command which normally acts in a forward direction, that command will act in a backward direction. For example, to kill text back to the start of the line, you might type 'M-- C-k'.
The general way to pass numeric arguments to a command is to ...
Is the 'type' attribute necessary for tags?
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@MatthieuNapoli : all browsers are required to support the <script> HTML tag, ignoring its contents if they don't support the scripting language.
– MestreLion
Jan 13 '19 at 17:38
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Ruby convert Object to Hash
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instance_values can be used for all ruby objects for the similar output.
– bishal
Jan 22 '19 at 11:37
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How can i use iptables on centos 7? [closed]
I installed CentOS 7 with minimal configuration (os + dev tools). I am trying to open 80 port for httpd service, but something wrong with my iptables service ... what's wrong with it? What am I doing wrong?
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How to extract extension from filename string in Javascript? [duplicate]
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A variant that works with all of the following inputs:
"file.name.with.dots.txt"
"file.txt"
"file"
""
null
undefined
would be:
var re = /(?:\.([^.]+))?$/;
var ext = re.exec("file.name.with.dots.txt")[1]; // "txt"
var ext = re.exec("file.txt")[...