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Is volatile expensive?
... down the page I see that LoadLoad and LoadStore are effectively no-ops on X86 CPUs. Does this mean that volatile read operations can be done without a explicit cache invalidation on x86, and is as fast as a normal variable read (disregarding the reordering constraints of volatile)?
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Get the date (a day before current time) in Bash
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On OS X you can install coreutils through brew: see stackoverflow.com/questions/15374752/…
– kasterma
Jun 4 '14 at 8:30
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Add new field to every document in a MongoDB collection
How can I add a new field to every document in an existent collection?
5 Answers
5
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String strip() for JavaScript? [duplicate]
...ion will now be available as a first-class function on your strings. For example:
" dog".trim() === "dog" //true
EDIT: Took J-P's suggestion to combine the regex patterns into one. Also added the global modifier per Christoph's suggestion.
Took Matthew Crumley's idea about sniffing on the trim...
How to post data in PHP using file_get_contents?
...nts is not that hard, actually : as you guessed, you have to use the $context parameter.
There's an example given in the PHP manual, at this page : HTTP context options (quoting) :
$postdata = http_build_query(
array(
'var1' => 'some content',
'var2' => 'doh'
)
);
$...
How to retrieve the current version of a MySQL database management system (DBMS)?
...6 |
| version_compile_os | pc-linux-gnu |
+-------------------------+------------------------------------------+
5 rows in set (0.04 sec)
MySQL 5.0 Reference Manual (pdf) - Determining Your Current MySQL Version - page 42
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Is there a Python Library that contains a list of all the ascii characters?
... import string
>>> string.ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
If you want all printable characters:
>>> string.printable
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;?@[\\]^_`{|}~ \t\n\r\x0b\x0c'
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In Intellij IDEA how do I replace text with a new line?
...line using Intellij IDEA's replace function. What do I put in the search box? In vim I'd use &\r
10 Answers
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指定组件的大小 · App Inventor 2 中文网
... parent: Size is chosen to fill the space available.
Size specified in pixels
Size in percent of Screen (not available for all components)
Since not all Android devices have the same screen size, it’s good to avoid specifying sizes numerically as pixels if possible.
The notions of Automati...
Simple way to create matrix of random numbers
I am trying to create a matrix of random numbers, but my solution is too long and looks ugly
13 Answers
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