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git-checkout older revision of a file under a new name
..., e.g. HEAD:README, :README, master:./README
A suffix : followed by a path names the blob or tree at the given path in the tree-ish object named by the part before the colon. :path (with an empty part before the colon) is a special case of the syntax described next: content recorded in the...
delete map[key] in go?
... the old language, to delete the entry with key k from the map represented by m, one wrote the statement,
m[k] = value, false
This syntax was a peculiar special case, the only two-to-one assignment. It required passing a value (usually ignored) that is evaluated but discarded, plus a boolean that...
Shallow copy of a Map in Java
... [...] It's a shame that Cloneable is broken, but it happens.
Bloch (who by the way, designed and implemented the Collection framework) even went further in saying that he only provides the clone() method just "because people expect it". He does NOT actually recommend using it at all.
I think t...
Change x axes scale in matplotlib
...displayed using the flags in rcParams (from matplotlib import rcParams) or by setting them directly. I haven't found a more elegant way of changing between '1e' and 'x10^' scientific notation than:
ax.xaxis.major.formatter._useMathText = True
This should give you the more Matlab-esc, and indeed a...
How is the undo tree used in Vim?
...as nothing to do with branches; in fact, the very next help section starts by saying "Above we only discussed one line of undo/redo. But it is also possible to branch off." Is there some way to use undojoin with branches that I'm just not seeing?
– Kyle Strand
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What happens if you don't commit a transaction to a database (say, SQL Server)?
...r Management Studio auto commits if you close the query window/connection, by default.
– Nuno
Sep 11 '15 at 9:37
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Relative imports in Python 3
...nt
It's kind of a pain, but there's a clue as to why in an email written by a certain Guido van Rossum...
I'm -1 on this and on any other proposed twiddlings of the __main__
machinery. The only use case seems to be running scripts that happen
to be living inside a module's directory, which...
Why is DarkGray lighter than Gray?
...riosity here, tinged with some practical concerns because I get caught out by this occasionally.
3 Answers
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What is the difference between a string and a byte string?
I am working with a library which returns a byte string and I need to convert this to a string.
7 Answers
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Microsoft Roslyn vs. CodeDom
...code generation need, Roslyn is tackling the entire language tooling space by providing a framework to allow you to build just about any sort of C# or VB language tool you can think of.
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