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How do I pause my shell script for a second before continuing?
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Typically the spec is at least the given amount of time, which usually suits the purpose of sleep.
– Marlin Pierce
May 17 '19 at 14:44
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PowerShell: Store Entire Text File Contents in Variable
...rter, that's what I prefer. Unfortunately, neither of the methods you provided for calculating the total number of lines takes trailing blank lines into consideration. Any other ideas?
– Nick
Nov 2 '11 at 7:20
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Looking for simple Java in-memory cache [closed]
...nkedHashMap isn't good enough), and which can be serialized to disk periodically.
9 Answers
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Is it possible to preview stash contents in git?
...n Is it possible to preview stash contents in git? you can install tig and call tig stash. This free/open console program also allows you to choose which stash to compare
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Debugging with command-line parameters in Visual Studio
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Spot on. But apparently in VS2017 it's not called "Debugging", but "Debug". We may never know why.
– OmarL
Oct 16 '17 at 14:43
3
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Find and replace in file and overwrite file doesn't work, it empties the file
...hat I'd use if I were typing it – I agree it's neater – but sh (if I recall correctly) doesn't have that {...} expansion. In a Makefile you might be using sh rather than bash, so if you're aiming for portability (or posixness) then you'll need to avoid that construction.
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Extracting specific columns from a data frame
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Using the dplyr package, if your data.frame is called df1:
library(dplyr)
df1 %>%
select(A, B, E)
This can also be written without the %>% pipe as:
select(df1, A, B, E)
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Convert datetime object to a String of date only in Python
...ge to specify output, and there are two ways to access it:
direct method call: dt.strftime('format here'); and
new format method: '{:format here}'.format(dt)
So your example could look like:
dt.strftime('%m/%d/%Y')
or
'{:%m/%d/%Y}'.format(dt)
For completeness' sake: you can also directly a...
Get DateTime.Now with milliseconds precision
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edited Feb 23 at 3:49
Callum Watkins
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answered Apr 16 '13 at 8:45
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Python: Select subset from list based on index set
...this kind of selection is very powerful, especially when nested and/or multidimensional.
– Thomas Browne
May 25 '14 at 21:11
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