大约有 48,000 项符合查询结果（耗时：0.0486秒） [XML]
Using Sinatra for larger projects via multiple files
It seems that in Sinatra all route handlers are being written into a single file, if I understand right it acts as a one large/small controller. Is there any way to split it into separate independent files, so when let's say somebody calls "/" - one action is executed, and if smth like "/posts/2" is...
Vim: faster way to select blocks of text in visual mode
I have been using vim for quite some time and am aware that selecting blocks of text in visual mode is as simple as SHIFT + V and moving the arrow key up or down line-by-line until I reach the end of the block of text that I want selected.
...
How to insert element into arrays at specific position?
...
array_slice() can be used to extract parts of the array, and the union array operator (+) can recombine the parts.
$res = array_slice($array, 0, 3, true) +
array("my_key" => "my_value") +
array_slice($array, 3, count($array)-3, true);
This example:
$array = array(
...
Where are the PostgreSQL logs on macOS?
...
SELECT
*
FROM
pg_settings
WHERE
category IN( 'Reporting and Logging / Where to Log' , 'File Locations')
ORDER BY
category,
name;
In my case, it's in "/Library/PostgreSQL/8.4/data/pg_log"
share
...
Get all Attributes from a HTML element with Javascript/jQuery
...answered Jan 12 '10 at 12:17
Roland BoumanRoland Bouman
27.5k55 gold badges6161 silver badges6464 bronze badges
...
Define static method in source-file with declaration in header-file in C++
...
You can't. And it makes no sense to do so, since linking the program together would cause unresolved externals to appear.
– x13n
Oct 8 '13 at 10:41
...
Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()
...
I think the docs explain the difference and usage of these two functions pretty well:
newFixedThreadPool
Creates a thread pool that reuses a
fixed number of threads operating off
a shared unbounded queue. At any
point, at most nThreads threads will
be...
How do I tell matplotlib that I am done with a plot?
...
There is a clear figure command, and it should do it for you:
plt.clf()
If you have multiple subplots in the same figure
plt.cla()
clears the current axes.
share
...
Reading/parsing Excel (xls) files with Python
...o, be warned that doing this is a real PITA. The number of caveats is huge and the documentation is lacking and annoying. I ran into many weird bugs and gotchas, some of which took many hours to figure out.
UPDATE: For newer .xlsx files, the recommended library for reading and writing appears to be...
How to run multiple Python versions on Windows
I had two versions of Python installed on my machine (versions 2.6 and 2.5). I want to run 2.6 for one project and 2.5 for another.
...