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How to determine whether a given Linux is 32 bit or 64 bit?
...wk '{print $2}'
Note: you can have a 64-bit CPU with a 32-bit kernel installed.
(as ysdx mentions in his/her own answer, "Nowadays, a system can be multiarch so it does not make sense anyway. You might want to find the default target of the compiler")
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Retain cycle on `self` with blocks
...nswered Dec 4 '10 at 8:14
Lily BallardLily Ballard
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Redirecting to URL in Flask
...eturn a redirect:
import os
from flask import Flask,redirect
app = Flask(__name__)
@app.route('/')
def hello():
return redirect("http://www.example.com", code=302)
if __name__ == '__main__':
# Bind to PORT if defined, otherwise default to 5000.
port = int(os.environ.get('PORT', 5000)...
Using node.js as a simple web server
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Simplest Node.js server is just:
$ npm install http-server -g
Now you can run a server via the following commands:
$ cd MyApp
$ http-server
If you're using NPM 5.2.0 or newer, you can use http-server without installing it with npx. This isn't recommended for u...
How to replace all dots in a string using JavaScript
I want to replace all the occurrences of a dot( . ) in a JavaScript string
15 Answers
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VIM Replace word with contents of paste buffer?
... the one that'd get overwritten by the change command.)
Registers are generally specified by typing " then the name (single character) of the register, like "ay then "ap to yank into register a, then put the contents of register a. Same goes for a change command. In this case, if you don't want the ...
How to set the margin or padding as percentage of height of parent container?
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@zanerock I'm fairly certain that MDN compat table is outdated. For instance, it says that Safari needs the -webkit- prefix, but according to caniuse it hasn't required the prefix since Safari 11. Did you try it with any browser in which it didn't work?
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How to rsync only a specific list of files?
... for me using the --include-from option. Without the --exclude="*" option, all the files in the directory are being synced, with the option, no files are.
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How to style dt and dd so they are on the same line?
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CSS Grid layout
Like tables, grid layout enables an author to align elements into columns and rows.
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout
To change the column sizes, take a look at the grid-template-columns property...
MySQL: Invalid use of group function
...in the WHERE clause.
Second, instead of using a subquery, simply join the table to itself:
SELECT a.pid
FROM Catalog as a LEFT JOIN Catalog as b USING( pid )
WHERE a.sid != b.sid
GROUP BY a.pid
Which I believe should return only rows where at least two rows exist with the same pid but there is ...