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difference between each.with_index and each_with_index in Ruby?
I'm really confused about the difference between each.with_index and each_with_index . They have different types but seem to be identical in practice.
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Why is there an injected class name?
...nt instantiation. See DR 176 for a change between C++98 and C++03 that clarified that.
The idea of the injected class name was present in C++98, but the terminology was new for C++03.
C++98 says:
A class-name is inserted into the scope in which it is declared immediately after the class-name i...
How to change current working directory using a batch file
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Specify /D to change the drive also.
CD /D %root%
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Allowed characters in Linux environment variable names
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@checksum, UPPERCASE is explicitly specified for variable names with meaning to POSIX-specified tools, including the shell; names with at least one lower-case character are explicitly reserved for application use. Thus, best practice is actually to include at leas...
How to load a tsv file into a Pandas DataFrame?
...do what you want:
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t')
If you have a header, you can pass header=0.
DataFrame.from_csv('c:/~/trainSetRel3.txt', sep='\t', header=0)
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How do you implement an async action delegate method?
...T: An async method should return Task when it doesn't have a return value. If it uses the async keyword, then the actual Task instance will be created by a state machine, not the function directly.
– Stephen Cleary
Dec 19 '19 at 13:57
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Copying files from Docker container to host
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Here's a handy way to get at your latest container if you're simply using docker for a temp Linux environment: docker ps -alq.
– Josh Habdas
Jun 3 '15 at 15:29
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Argmax of numpy array returning non-flat indices
...get the non-flat index of all occurrences of the maximum value, you can modify eumiro's answer slightly by using argwhere instead of where:
np.argwhere(a==a.max())
>>> a = np.array([[1,2,4],[4,3,4]])
>>> np.argwhere(a==a.max())
array([[0, 2],
[1, 0],
[1, 2]])
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How do I get a distinct, ordered list of names from a DataTable using LINQ?
...First, select your data into a new list, let's call it x1, do a projection if desired
Next, create a distinct list, from x1 into x2, using whatever distinction you require
Finally, create an ordered list, from x2 into x3, sorting by whatever you desire
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Are nested span tags OK in XHTML?
...tion, but not the "OK" part. The DTD can only describe a subset of the specification.
– Quentin
Jul 3 '09 at 8:56
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