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bash assign default value
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209
Use a colon:
: ${A:=hello}
The colon is a null command that does nothing and ignores its ar...
Preventing Laravel adding multiple records to a pivot table
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Alexandre ButynskiAlexandre Butynski
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How do I format a string using a dictionary in python-3.x?
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23
Since the question is specific to Python 3, here's using the new f-string syntax, available sin...
Binding a Button's visibility to a bool value in ViewModel
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204
Assuming AdvancedFormat is a bool, you need to declare and use a BooleanToVisibilityConverter:...
How do I specify different layouts for portrait and landscape orientations?
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204
Create a layout-land directory and put the landscape version of your layout XML file in that d...
How to use `subprocess` command with pipes
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452
To use a pipe with the subprocess module, you have to pass shell=True.
However, this isn't real...
TypeError: $.ajax(…) is not a function?
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1032
Neither of the answers here helped me. The problem was: I was using the slim build of jQuery, wh...
How do I find numeric columns in Pandas?
...lude and exclude. So isNumeric would look like:
numerics = ['int16', 'int32', 'int64', 'float16', 'float32', 'float64']
newdf = df.select_dtypes(include=numerics)
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Java Naming Convention with Acronyms [closed]
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241
Since it looks like the answer is that there is no single standard for this in Java, I'd like ...
how to create a file name with the current date & time in python?
...ort time
timestr = time.strftime("%Y%m%d-%H%M%S")
print timestr
yields:
20120515-155045
so your filename could append or use this string.
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