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What do @, - and + do as prefixes to recipe lines in Make?
... normally executed. See also the POSIX specification for make and also §9.3 of the GNU Make manual.
The + notation is a (POSIX-standardized) generalization of the de facto (non-standardized) mechanism whereby a command line containing ${MAKE} or $(MAKE) is executed under make -n.
(@ is discusse...
Blocks on Swift (animateWithDuration:animations:completion:)
...lock accepts an argument.
– Can
Jun 3 '15 at 18:45
1
dat completion block syntax :(
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Download old version of package with NuGet
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edited Mar 26 '15 at 11:53
Arne Evertsson
18.5k1616 gold badges6464 silver badges8282 bronze badges
ans...
UICollectionView auto scroll to cell at IndexPath
...array of collection view. All of the cells don't fit on the screen. I have 30 cells and only 6 on the screen.
9 Answers
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C/C++ NaN constant (literal)?
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153
In C, NAN is declared in <math.h>.
In C++, std::numeric_limits<double>::quiet_NaN()...
What are the differences between GPL v2 and GPL v3 licenses? [closed]
... the reasons for, and what are the differences between the GPL v2 and GPL v3 open source licenses? Explanations and references to legal terms and further descriptions would be appreciated.
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How do I manually create a file with a . (dot) prefix in Windows? For example, .htaccess
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367
If you start Notepad and then File -> Save As -> Write .htaccess and choose "All Files" ...
How to get a tab character?
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edited Dec 23 '19 at 3:57
Aeyoun
3,69422 gold badges2626 silver badges4343 bronze badges
a...
What are the advantages of NumPy over regular Python lists?
...as you describe, in Python, would take at least 20 MB or so, while a NumPy 3D array with single-precision floats in the cells would fit in 4 MB. Access in reading and writing items is also faster with NumPy.
Maybe you don't care that much for just a million cells, but you definitely would for a bil...
Export from sqlite to csv using shell script
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sqlite3
You have a separate call to sqlite3 for each line; by the time your select runs, your .out out.csv has been forgotten.
Try:
#!/bin/bash
./bin/sqlite3 ./sys/xserve_sqlite.db <<!
.headers on
.mode csv
.output out.csv
se...