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Linux/Unix command to determine if process is running?
...ps cax | grep command
The output on Gentoo Linux:
14484 ? S 0:00 apache2
14667 ? S 0:00 apache2
19620 ? Sl 0:00 apache2
21132 ? Ss 0:04 apache2
The output on OS X:
42582 ?? Z 0:00.00 (smbclient)
46529 ?? Z 0:00.00 (smbclient)
46539...
Random row selection in Pandas dataframe
...me(x, n):
return x.ix[random.sample(x.index, n)]
Note: As of Pandas v0.20.0, ix has been deprecated in favour of loc for label based indexing.
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How can I tell gcc not to inline a function?
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150
You want the gcc-specific noinline attribute.
This function attribute prevents a
function ...
How do I apply a perspective transform to a UIView?
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330
As Ben said, you'll need to work with the UIView's layer, using a CATransform3D to perform the l...
Showing the same file in both columns of a Sublime Text window
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edited Oct 22 '16 at 3:40
answered May 30 '14 at 23:33
Ma...
What is the performance cost of having a virtual method in a C++ class?
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104
I ran some timings on a 3ghz in-order PowerPC processor. On that architecture, a virtual functi...
Double exclamation points? [duplicate]
... // Evaluates to true.
If foo.bar is passed through, then it may not be 0 but some other falsy value. See the following truth table:
Truth Table for javascript
'' == '0' // false
0 == '' // true
0 == '0' // true
false == 'false'...
How do you clone a BufferedImage
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answered Aug 18 '10 at 16:26
KlarkKlark
7,59233 gold badges3232 silver badges5757 bronze badges
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For loop example in MySQL
...ot null auto_increment primary key,
val smallint unsigned not null default 0
)
engine=innodb;
drop procedure if exists load_foo_test_data;
delimiter #
create procedure load_foo_test_data()
begin
declare v_max int unsigned default 1000;
declare v_counter int unsigned default 0;
truncate table f...
What are the minimum margins most printers can handle?
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Every printer is different but 0.25" (6.35 mm) is a safe bet.
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