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How can I check whether a numpy array is empty or not?
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317
You can always take a look at the .size attribute. It is defined as an integer, and is zero (0)...
typecast string to integer - Postgres
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129
Wild guess: If your value is an empty string, you can use NULLIF to replace it for a NULL:
SE...
Eclipse, regular expression search and replace
...'th capture group.
So:
search: (\w+\.someMethod\(\))
replace: ((TypeName)$1)
Hint: CTRL + Space in the textboxes gives you all kinds of suggestions for regular expression writing.
share
|
improve ...
Set transparent background using ImageMagick and commandline prompt
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140
I am using ImageMagick 6.6.9-7 on Ubuntu 12.04.
What worked for me was the following:
convert...
Maven Install on Mac OS X
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OS X prior to Mavericks (10.9) actually comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications are met, run mvn -version ...
iTextSharp - Sending in-memory pdf in an email attachment
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81
Have you tried:
PdfWriter writer = PdfWriter.GetInstance(doc, memoryStream);
// Build pdf code...
How to compare two dates?
...rt datetime, timedelta
>>> past = datetime.now() - timedelta(days=1)
>>> present = datetime.now()
>>> past < present
True
>>> datetime(3000, 1, 1) < present
False
>>> present - datetime(2000, 4, 4)
datetime.timedelta(4242, 75703, 762105)
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Timeout a command in bash without unnecessary delay
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153
I think this is precisely what you are asking for:
http://www.bashcookbook.com/bashinfo/sourc...