大约有 47,000 项符合查询结果(耗时:0.0502秒) [XML]
How do I extract a sub-hash from a hash?
...e same:
h1 = {:a => :A, :b => :B, :c => :C, :d => :D}
h2 = h1.select {|key, value| [:b, :d, :e, :f].include?(key) } # => {:b=>:B, :d=>:D}
h1 = Hash[h1.to_a - h2.to_a] # => {:a=>:A, :c=>:C}
And if you want to patch that into the Hash class:
class Hash
def extract...
How do I alter the position of a column in a PostgreSQL database table?
... tablename (column defs go here);
insert into tablename (col1, col2, col3) select col1, col2, col3 from oldtable;
share
|
improve this answer
|
follow
|
...
Max parallel http connections in a browser?
...
The limit of 2 connections per server has been removed from the HTTP 1.1 RFC: evertpot.com/http-11-updated
– Florian Winter
Sep 26 '14 at 7:29
...
How does Tortoise's non recursive commit work?
...cked out a copy of the SVN branch (my branch) locally to which I've merged from a different branch (which has a completely different folder structure). So basically there are a lot of deletions (of old files) and additions (of new files).
...
Hiding a password in a python script (insecure obfuscation only)
...yption method you use. The requirement here was just to hide the password from someone just looking at the script while it was open. In this case base64 is preferable to rot13 as it is in the Python standard library.
– Dave Webb
Jun 18 '12 at 10:33
...
read subprocess stdout line by line
...lity.py'],stdout=subprocess.PIPE)
I have needed this when calling python from within python.
share
|
improve this answer
|
follow
|
...
Renew Provisioning Profile
...gn).
I discovered that if I change something on the screen (in my case, I selected a previously
unused device), "Submit" darkens (becomes available).
Click on "Submit".
You're quietly (another UI problem :) taken back to the prior page, and the
"Download" and "Edit" buttons are gone, and the status...
How to jump from Intellij terminal to editor with shortcut
I know that you can jump from almost all windows in Intellij IDEA to the editor window with Esc . In Intellij's terminal window, this does not work. Does anyone know how to do this with a keyboard shortcut? This would be nice since I can jump from my editor to the terminal with Alt + F12 but I ca...
Where is Developer Command Prompt for VS2013?
...
From VS2013 Menu Select "Tools", then Select "External Tools". Enter as below:
Title: "VS2013 Native Tools-Command Prompt" would be good
Command: C:\Windows\System32\cmd.exe
Arguments: /k "C:\Program Files (x86)\Microsoft Visual Studio 12.0...
Create a folder if it doesn't already exist
... list( $wrapper, $target ) = explode( '://', $target, 2 );
}
// from php.net/mkdir user contributed notes
$target = str_replace( '//', '/', $target );
// put the wrapper back on the target
if( $wrapper !== null ) {
$target = $wrapper . '://' . $target;
}
// s...