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Java logical operator short-circuiting
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246
The && and || operators "short-circuit", meaning they don't evaluate the right-hand si...
How to avoid .pyc files?
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291
From "What’s New in Python 2.6 - Interpreter Changes":
Python can now be prevented from
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Extract subset of key-value pairs from Python dictionary object?
...bigdict[k]) for k in ('l', 'm', 'n'))
... or in Python 3 Python versions 2.7 or later (thanks to Fábio Diniz for pointing that out that it works in 2.7 too):
{k: bigdict[k] for k in ('l', 'm', 'n')}
Update: As Håvard S points out, I'm assuming that you know the keys are going to be in the dic...
How to create permanent PowerShell Aliases
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UPDATED - Jan 2017
It's possible to store in a profile.ps1 file any powershell code to be executed each time powershell starts. There are at least 6 different paths where to store the code depending on which user have to execute it. We ca...
Failed to load resource under Chrome
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290
I recently ran into this problem and discovered that it was caused by the "Adblock" extension ...
Find the day of a week
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df = data.frame(date=c("2012-02-01", "2012-02-01", "2012-02-02"))
df$day <- weekdays(as.Date(df$date))
df
## date day
## 1 2012-02-01 Wednesday
## 2 2012-02-01 Wednesday
## 3 2012-02-02 Thursday
Edit: Just to show another way......
What tools are there for functional programming in C?
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answered Oct 19 '08 at 18:32
ephemientephemient
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Execution time of C program
...ng point type. This can be more precise than a second (e.g. you measure 4.52 seconds). Precision depends on the architecture; on modern systems you easily get 10ms or lower, but on older Windows machines (from the Win98 era) it was closer to 60ms.
clock() is standard C; it works "everywhere". There...