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How to make a variadic macro (variable number of arguments)
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C99 way, also supported by VC++ compiler.
#define FOO(fmt, ...) printf(fmt, ##__VA_ARGS__)
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How do you see the entire command history in interactive Python?
..., and I Cmd + K (cleared) my earlier commands. I can go through them one by one using the arrow keys. But is there an option like the --history option in bash shell, which shows you all the commands you've entered so far?
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namespaces for enum types - best practices
...d Principle: Class should be closed for modifying, but open for extending. By extending I mean not adding to the existing code, but wrapping over it with the new code (eg. deriving).
– SasQ
Dec 12 '12 at 2:31
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Overlaying histograms with ggplot2 in R
...h this could just be due to my lack of knowledge). The other answer below by @kohske will by default display a legend which can then be modified (along with the specific colors displayed on the histogram) with, e.g. scale_fill_manual().
– Michael Ohlrogge
Sep ...
Specified argument was out of the range of valid values. Parameter name: site
....rs_prerelease.170513-2252'. Added 'IIS Management Console' as recommended by JPD. Problem solved.
– BobK
May 25 '17 at 22:16
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Simple tool to 'accept theirs' or 'accept mine' on a whole file using git
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@Santhos: the -- is used by Git to separate revisions (branch names etc.) from path names (filenames, directories). It is important if Git cannot decide if a name is the name of branch or the name of file. This follows POSIX (or GNU) convention of ...
How to detect if a variable is an array
...oundaries as each frame has its own Array object. You can work around this by checking the internal [[Class]] property of the object. To get it, use Object.prototype.toString() (this is guaranteed to work by ECMA-262):
Object.prototype.toString.call(obj) === '[object Array]'
Both methods will onl...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...ng the wrong direction. Interestingly enough, we could solve this problem by making List contravariant in A, but then the return type List[A] would be invalid as the cons function expects its return type to be covariant.
Our only two options here are to a) make A invariant, losing the nice, intuit...
github: No supported authentication methods available
...sion is probably accessed through plink and your keys are probably managed by Pageant.
Import the key you need each time you load Pageant. If you followed guides that said "import your key", and saw that it worked, but it doesn't work now, see Chapter 9: Using Pageant for authentication.
One last t...
What is this: [Ljava.lang.Object;?
... an array type then the binary name of the class is returned, as specified by the Java Language Specification (§13.1).
If this class object represents a primitive type or void, then the name returned is the Java language keyword corresponding to the primitive type or void.
If this class ...