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Releasing memory in Python
... size to eliminate the effects of other processes in the system.
The C runtime (e.g. glibc, msvcrt) shrinks the heap when contiguous free space at the top reaches a constant, dynamic, or configurable threshold. With glibc you can tune this with mallopt (M_TRIM_THRESHOLD). Given this, it isn't surpr...
Virtualbox “port forward” from Guest to Host [closed]
...8.5.1) 56(84) bytes of data.
64 bytes from 192.168.5.1: icmp_seq=1 ttl=128 time=2.30 ms
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Firewall issues?
@Stranger suggested that in some cases it would be necessary to open used port (8000 or whichever is used) in firewall like this (example for ufw firewall, I haven't tested):
sudo ufw allow ...
Django DB Settings 'Improperly Configured' Error
...e clear to me in the documentation, or maybe I read it & forgot by the time I needed to do it.
– Zamphatta
Mar 24 '13 at 0:13
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How to use glyphicons in bootstrap 3.0
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Bootply Migration save a lot of time converting code to TWB 3. Very useful, @Michael / Buhake-Sindi.
– Fernando Kosh
Oct 23 '13 at 2:05
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Count number of occurences for each unique value
...ary(data.table)
# Generate a data table object, which draws a number 10^7 times
# from 1 to 10 with replacement
DT<-data.table(x=sample(1:10,1E7,TRUE))
# Count Frequency of each factor level
DT[,.N,by=x]
share
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jQuery to retrieve and set selected option value of html select element
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I know this is old but I just had a bear of a time with Razor, could not get it to work no matter how hard I tried. Kept coming back as "undefined" no matter if I used "text" or "html" for attribute. Finally I added "data-value" attribute to the option and it read that j...
Add 10 seconds to a Date
...up with 2'32" difference instead of 1'32". The solution with new Date(d.getTime() - 92*1000); works however !
– Rafalon
Oct 16 '17 at 12:42
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SQL update query using joins
...ks ! Simple to design complicated query / joined updates. I use it all the time...
– Adam W
Dec 17 '15 at 5:19
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Echo equivalent in PowerShell for script testing
... output when you need it using the appropriate preference variable. Saves time and is a nice feature for other users of your functions.
– JasonMArcher
Apr 2 '09 at 20:04
5
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How can I list the contents of a directory in Python?
...ve to os.path.isdir/file to know if it's a file or not, and that saves CPU time because stat is already done when scanning dir in Windows:
example to list a directory and print files bigger than max_value bytes:
for dentry in os.scandir("/path/to/dir"):
if dentry.stat().st_size > max_value:...