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Threading in a PyQt application: Use Qt threads or Python threads?
...ode executed within the context of a QT thread still acquires the GIL, and now you have to manage two sets of logic for locking your code.
In the end, both QT threads and Python threads are wrappers around system threads. Python threads are marginally safer to use, since those parts that are not wr...
What are the differences between “=” and “
...:
median((x = 1 : 10))
But also:
if (! (nf = length(from))) return()
Now you might object that such code is atrocious (and you may be right). But I took this code from the base::file.copy function (replacing <- with =) — it’s a pervasive pattern in much of the core R codebase.
The ori...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...
tidyverse solutions now moved to the top.
– Aaron left Stack Overflow
Oct 11 '19 at 17:34
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...
Header files for x86 SIMD intrinsics
... |
| mm3dnow.h | 3dnow! (K6-2) (deprecated) |
| xmmintrin.h | SSE + MMX (Pentium 3, Athlon XP) |
| emmintrin...
Convert a binary NodeJS Buffer to JavaScript ArrayBuffer
... in [V8] 4.3 Buffers are backed by Uint8Array", so possibly this is faster now...
– ChrisV
Jun 21 '15 at 20:38
See my ...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
....5) Execute Redirection: Any redirection that was discovered in phase 2 is now executed.
The results of phases 4 and 5 can impact the redirection that was discovered in phase 2.
If the redirection fails, then the remainder of the command is aborted. Note that failed redirection does not set ERRORL...
Overloading Macro on Number of Arguments
...unctions:
int FOO4(int a, int b, int c, int d) { return a + b + c + d; }
Now you can use FOO with 2, 3 and 4 arguments:
FOO(42, 42) // will use makro function FOO2
FOO(42, 42, 42) // will use makro function FOO3
FOO(42, 42, 42, 42) // will call FOO4 function
Limitations
Only up to 63 argument...
d3 axis labeling
... because your original answer put me on the right track, but the way it is now, future readers won't have to fiddle with it as much to work out what it all means. :-) Cheers.
– Michael Scheper
Jun 15 '15 at 17:03
...
bool to int conversion
... zero and
the value true is converted to one.
As for C, as far as I know there is no bool in C. (before 1999) So bool to int conversion is relevant in C++ only. In C, 4<5 evaluates to int value, in this case the value is 1, 4>5 would evaluate to 0.
EDIT: Jens in the comment said, C99 ...
When do Java generics require
... a match that the compiler works out to Matcher<ArrayList<T>>. Now if it wasn't a type parameter, things would be fine, because List and ArrayList are covariant, but since Generics, as far as the compiler is concerned require ArrayList, it can't tolerate a List for reasons that I hope ar...