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String formatting: % vs. .format vs. string literal
...uld always work:
"hi there %s" % name
yet, if name happens to be (1, 2, 3), it will throw a TypeError. To guarantee that it always prints, you'd need to do
"hi there %s" % (name,) # supply the single argument as a single-item tuple
which is just ugly. .format doesn't have those issues. Also ...
Should I use char** argv or char* argv[]?
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answered Apr 23 '09 at 2:59
Johannes Schaub - litbJohannes Schaub - litb
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Intelligent point label placement in R
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edited Sep 30 '11 at 15:16
answered Sep 30 '11 at 15:04
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
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350
You need to specify data, index and columns to DataFrame constructor, as in:
>>> pd....
Singleton: How should it be used
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183
Answer:
Use a Singleton if:
You need to have one and only one object of a type in system
Do no...
How do I check if a directory exists? “is_dir”, “file_exists” or both?
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Marc BMarc B
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Wait until file is unlocked in .NET
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edited May 23 '17 at 11:54
Community♦
111 silver badge
answered Sep 8 '08 at 21:59
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Converting a date string to a DateTime object using Joda Time library
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483
Use DateTimeFormat:
DateTimeFormatter formatter = DateTimeFormat.forPattern("dd/MM/yyyy HH:mm:s...