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if A vs if A is not None:
... Greg HewgillGreg Hewgill
783k167167 gold badges10841084 silver badges12221222 bronze badges
...
Why is IntelliJ 13 IDEA so slow after upgrading from version 12?
...t least 1GB (was 300MB).Example below:
-Xms128m
-Xmx8192m
-XX:MaxPermSize=1024m
Upon restart it was much faster.
For IntelliJ 2020 going back to 2017 on Mac
/Applications/IntelliJ IDEA.app/Contents/bin/idea.vmoptions
On a Mac, this file is located in this path:
For IntelliJ 14 or 15 on Mac
/...
Applying function with multiple arguments to create a new pandas column
...on:
>>> import numpy as np
>>> df = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 600
2 30 10 300
or vectorize arbitrary fun...
Debugging in Clojure? [closed]
...
answered Feb 28 '10 at 20:13
John Lawrence AspdenJohn Lawrence Aspden
15.5k1111 gold badges5858 silver badges9494 bronze badges
...
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...ir original size
[NSNumber numberWithint:42]
[NSNumber numberWithDouble:10.8]
[NSNumber numberWithBool:YES]
[NSNumber numberWithint:6 + x * 2012]
@42
@10.8
@YES
@(6 + x * 2012)
[NSArray arrayWithObjects: a, b, c, nil]
[array objectAtIndex:i]
[NSDictionary dictionaryWithObjectsAndKeys: v...
Getting realtime output using subprocess
... terminates.
– Alice Purcell
Apr 9 '10 at 12:24
1
@Dave For future ref: print utf-8 lines in py2+...
How can I use PowerShell with the Visual Studio Command Prompt?
...s been driving me nuts that I have to punt to cmd.exe when running the VS2010 Command Prompt. I used to have a nice vsvars2008.ps1 script for Visual Studio 2008. Anyone have a vsvars2010.ps1 or something similar?
...
open read and close a file in 1 line of code
...n't forget to import Path:
jsk@dev1:~$ python3
Python 3.5.2 (default, Sep 10 2016, 08:21:44)
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from pathlib import Path
>>> (Path("/etc") / "hostname").read_text()
'dev1.example\...
How to find list intersection?
...
answered Sep 13 '10 at 1:32
Mark ByersMark Byers
683k155155 gold badges14681468 silver badges13881388 bronze badges
...
Writing your own STL Container
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\...