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PL/SQL, how to escape single quote in a string?
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188
You can use literal quoting:
stmt := q'[insert into MY_TBL (Col) values('ER0002')]';
Docume...
How to get the original value of an attribute in Rails
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Before rails 5.1
Appending _was to your attribute will give you the previous value.
For rails 5.1+
Copied from Lucas Andrade's answer below: https://stackoverflow.com/a/50973808/9359123
Appending _was is deprecated in rails 5.1, now ...
RSpec: What is the difference between a feature and a request spec?
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1 Answer
1
Active
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Is there a way to use two CSS3 box shadows on one element?
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410
You can comma-separate shadows:
box-shadow: inset 0 2px 0px #dcffa6, 0 2px 5px #000;
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how do you filter pandas dataframes by multiple columns
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176
Using & operator, don't forget to wrap the sub-statements with ():
males = df[(df[Gender]...
How to open every file in a folder?
I have a python script parse.py, which in the script open a file, say file1, and then do something maybe print out the total number of characters.
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How do I remove leading whitespace in Python?
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edited Sep 27 '17 at 22:40
Stevoisiak
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How to create a loop in bash that is waiting for a webserver to respond?
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174
Combining the question with chepner's answer, this worked for me:
until $(curl --output /dev/...
Bash script processing limited number of commands in parallel
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Use the wait built-in:
process1 &
process2 &
process3 &
process4 &
wait
process5 &
process6 &
process7 &
process8 &
wait
For the above example, 4 processes process1 ... process4 would be started in the background, and the...
How do I delete a Git branch with TortoiseGit
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edited Feb 5 '13 at 9:28
Răzvan Flavius Panda
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