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How to get Linux console window width in Python
...mns = os.popen('stty size', 'r').read().split()
uses the 'stty size' command which according to a thread on the python mailing list is reasonably universal on linux. It opens the 'stty size' command as a file, 'reads' from it, and uses a simple string split to separate the coordinates.
Unlike the...
How to alter a column's data type in a PostgreSQL table?
... For some other cases, you might need to specify the way to cast like ALTER TABLE tbl_name ALTER COLUMN col_name TYPE integer USING col_name::integer;
– Nobu
May 1 '14 at 17:45
...
Double negation (!!) in javascript - what is the purpose? [duplicate]
...
It casts to boolean. The first ! negates it once, converting values like so:
undefined to true
null to true
+0 to true
-0 to true
'' to true
NaN to true
false to true
All other expressions to false
Then the other ! negates i...
How do I change the working directory in Python?
cd is the shell command to change the working directory.
14 Answers
14
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Change default primary key in Eloquent
...d to make sure you set public $incrementing = false otherwise laravel will cast the field to an Integer, giving 0
class User extends Model {
protected $primaryKey = 'my_string_key';
public $incrementing = false;
}
...
Correct way to write line to file?
...rifies my intent. Feel free to edit my answers if they are "rather useless and misleading".
– Johnsyweb
Dec 3 '14 at 9:57
1
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How to write log to file
...The safer permissions are 0644 or even 0664 to allow user read/write, user and group read/write, and in both cases disallow everyone write.
– Jonathan
Jun 10 '16 at 16:22
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How do you do a simple “chmod +x” from within python?
...e os.stat() to get the current permissions, use | to or the bits together, and use os.chmod() to set the updated permissions.
Example:
import os
import stat
st = os.stat('somefile')
os.chmod('somefile', st.st_mode | stat.S_IEXEC)
...
How to check whether a file is empty or not?
... that's fine too. but i don't want to import stat. Its short and sweet enough and the size position in the returned list is not going to change anytime soon.
– ghostdog74
Mar 24 '10 at 13:48
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How to know user has clicked “X” or the “Close” button?
...er X or your CloseButton, you may get it through the sender object. Try to cast sender as a Button control, and verify perhaps for its name "CloseButton", for instance.
private void Form1_FormClosing(object sender, FormClosingEventArgs e) {
if (string.Equals((sender as Button).Name, @"CloseButt...