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Any way to clear python's IDLE window?
...nsole, but I do not know if they are the same. I tried system("clear") and it didn't work here.
25 Answers
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Fastest way to replace NAs in a large data.table
I have a large data.table , with many missing values scattered throughout its ~200k rows and 200 columns. I would like to re code those NA values to zeros as efficiently as possible.
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What's the use/meaning of the @ character in variable names in C#?
I discovered that you can start your variable name with a '@' character in C#.
In my C# project I was using a web service (I added a web reference to my project) that was written in Java. One of the interface objects defined in the WSDL had a member variable with the name "params". Obviously this i...
Set icon for Android application
...s, you should include a 48dp sized icon:
drawable-ldpi (120 dpi, Low density screen) - 36px x 36px
drawable-mdpi (160 dpi, Medium density screen) - 48px x 48px
drawable-hdpi (240 dpi, High density screen) - 72px x 72px
drawable-xhdpi (320 dpi, Extra-high density screen) - 96px x 96px
drawable-xxhd...
How can I make a time delay in Python? [duplicate]
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edited Jun 14 '18 at 21:04
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
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Does .NET provide an easy way convert bytes to KB, MB, GB, etc.?
...t; (mag * 10) == 2 ^ (10 * mag)
// [i.e. the number of bytes in the unit corresponding to mag]
decimal adjustedSize = (decimal)value / (1L << (mag * 10));
// make adjustment when the value is large enough that
// it would round up to 1000 or more
if (Math.Round(adjustedSi...
How can “while (i == i) ;” be a non-infinite loop in a single threaded application?
...cal
comparison operators <, <=, >, and >=
return false if either or both
operands are NaN. The
equality operator == returns false if
either operand is NaN, and the
inequality operator != returns true if
either operand is NaN. In
particular, x!=x is true if and only
if x...
Setting element of array from Twig
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There is no nice way to do this in Twig. It is, however, possible by using the merge filter:
{% set arr = arr|merge({'element': 'value'}) %}
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Postgres: clear entire database before re-creating / re-populating from bash script
I'm writing a shell script (will become a cronjob) that will:
7 Answers
7
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psql: FATAL: Peer authentication failed for user “dev”
when i create a new user, but it cannot login the database.
I do that like this:
12 Answers
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