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What is the difference between Caching and Memoization?
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As I see it, both involve avoiding repeated function calls to get data by storing it .
5 Answers
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How do I use vi keys in ipython under *nix?
... able to switch modes interactively in IPython 5 and I found you can do so by recreating the prompt manager on the fly:
a = get_ipython().configurables[0]; a.editing_mode='vi'; a.init_prompt_toolkit_cli()
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What good are SQL Server schemas?
... However, I've been primarily a SQL 2000 guy and I've always been confused by schemas in 2005+. Yes, I know the basic definition of a schema, but what are they really used for in a typical SQL Server deployment?
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C++ Redefinition Header Files (winsock2.h)
...ut it will exclude many other stuff you may need and you should include it by your own.
Define _WINSOCKAPI_ before windows.h or project wide. But when you include WinSock2.h you get macro redefinition warning.
Use windows.h instead of WinSock2.h when winsock.h is enough for your project (in most cas...
Effect of a Bitwise Operator on a Boolean in Java
...bitwise operators are supposed to travel variables and operate on them bit by bit. In the case of integers, longs, chars this makes sense. These variables can contain the full range of values enforced by their size.
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Extract substring using regexp in plain bash
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@VictorZamanian from here: "By default, sed prints every line. If it makes a substitution, the new text is printed instead of the old one. If you use an optional argument to sed, "sed -n," it will not, by default, print any new lines. ... When the "-n" ...
Grepping a huge file (80GB) any way to speed it up?
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that was MUCH quicker by an order of magnitude thanks. BTW I added -n to get the line numbers. Also maybe a -m to exit after match
– zzapper
Dec 17 '12 at 12:55
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Can you avoid Gson converting “” into unicode escape sequences?
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I wonder why it's on by default. JSON has nothing to do with HTML. The spec states only " and `\` need to be escaped.
– Mark Jeronimus
Feb 16 '17 at 10:41
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How to print out all the elements of a List in Java?
...ts of a list of the collection's elements in the
order they are returned by its iterator, enclosed in square brackets
("[]"). Adjacent elements are separated by the characters ", " (comma
and space). Elements are converted to strings as by
String.valueOf(Object).
If you are using any custo...
What does axis in pandas mean?
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It specifies the axis along which the means are computed. By default axis=0. This is consistent with the numpy.mean usage when axis is specified explicitly (in numpy.mean, axis==None by default, which computes the mean value over the flattened array) , in which axis=0 along the rows...