大约有 47,000 项符合查询结果（耗时：0.0493秒） [XML]
Sorting data based on second column of a file
...his doesn't consider spaces in the first column neither works if there are more columns after the second, since -k read until the line end. Supposing it is a TSV file a better solution is sort -t$'\t' -k2 -n FILE
– tuxErrante
Apr 20 '19 at 16:28
...
JPA EntityManager: Why use persist() over merge()?
...rt the new register to the database.
persist() efficiency:
It could be more efficient for inserting a new register to a database than merge().
It doesn't duplicates the original object.
persist() semantics:
It makes sure that you are inserting and not updating by mistake.
Example:
{
A...
Unicode, UTF, ASCII, ANSI format differences
...ing.Default, and is often Windows-1252 but can be other locales.
There's more on my Unicode page and tips for debugging Unicode problems.
The other big resource of code is unicode.org which contains more information than you'll ever be able to work your way through - possibly the most useful bit ...
Utilizing multi core for tar+gzip/bzip compression/decompression
... of available cores, or eight if it could not query that. You can ask for more with -p n, e.g. -p 32. pigz has the same options as gzip, so you can request better compression with -9. E.g.
tar cf - paths-to-archive | pigz -9 -p 32 > archive.tar.gz
...
Controlling fps with requestAnimationFrame?
...mp feature. The new rAF timestamp adds useful infrastruction and it's also more precise than Date.now.
– markE
Jul 22 '14 at 19:57
13
...
PostgreSQL wildcard LIKE for any of a list of words
... table that has any of those words. This will work, but I'd like something more elegant.
4 Answers
...
How can I add a string to the end of each line in Vim?
...
|
show 3 more comments
44
...
How do I serialize a C# anonymous type to a JSON string?
...
|
show 3 more comments
77
...
Unstage a deleted file in git
...f-options-marker as a ref name, not a file name. Could it be written a bit more flexibly? Probably. Why wasn't it? Probably only the developers know for sure.
– twalberg
Nov 13 '17 at 15:08
...
Print multiple arguments in Python
...
My +1. These days I prefer the .format() as more readable than the older % (tuple) -- even though I have seen tests that show the % interpolation is faster. The print('xxx', a, 'yyy', b) is also fine for simple cases. I recommend also to learn .format_map() with dictio...