大约有 14,532 项符合查询结果（耗时：0.0198秒） [XML]
How to get overall CPU usage (e.g. 57%) on Linux [closed]
...n doesn't show the current CPU load but the average cpu load since the CPU started.
– Etienne
Sep 11 '14 at 15:54
...
Database development mistakes made by application developers [closed]
...p for writing correct queries.
From Why I Hate DISTINCT:
Where things start to go sour in my
opinion is when a developer is
building substantial query, joining
tables together, and all of a sudden
he realizes that it looks like he is
getting duplicate (or even more) rows
and his imm...
SET NAMES utf8 in MySQL?
...tf8"); this is setup stuff and not a query. put it right afte a connection start with setCharset() (or similar method)
some little thing in parctice:
status:
mysql server by default talks latin1
your hole app is in utf8
connection is made without any extra (so: latin1) (no SET NAMES utf8 ...,...
How can I visualize per-character differences in a unified diff file?
...s a diff-highlight perl script that shows fine-grained highlights.
Quick start to use it:
$ curl https://git.kernel.org/cgit/git/git.git/plain/contrib/diff-highlight/diff-highlight > diff-highlight
$ chmod u+x diff-highlight
$ git diff --color=always HEAD~10 | diff-highlight | less -R
...
Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)
...esarry trouble to find those users and kill same or some times u have to restart sql server if connections to db are so frequent.
– Saurabh Sinha
Nov 25 '14 at 19:16
add a com...
Organizing a multiple-file Go project [closed]
...
@ElgsQianChen The methods need to be public, it has to start with a capital letter. E.g. MyMethod() or MyStruct{...}.
– Gustav
Jan 24 '14 at 11:20
...
Splitting on last delimiter in Python string?
...c', 'd']
>>> s.rpartition(',')
('a,b,c', ',', 'd')
Both methods start splitting from the right-hand-side of the string; by giving str.rsplit() a maximum as the second argument, you get to split just the right-hand-most occurrences.
...
How do I get LaTeX to hyphenate a word that contains a dash?
...at is not fully expandable
\ExplSyntaxOn
% latex2e doesn't like commands starting with 'end', apparently expl3 doesn't have any problems with it
\cs_new:Npn \hyphenfix_emdash:c {---}
\cs_new:Npn \hyphenfix_endash:c {--}
\cs_new:Npn \hyphenfix_discardnext:NN #1#2{#1}
\catcode`\-=\active
\cs_new...
Divide a number by 3 without using *, /, +, -, % operators
... = ' ';
itoa(abs(i), &str[1], 3); // Put ternary absolute value starting at str[1]
str[strlen(&str[1])] = '\0'; // Drop last digit
return strtol(str, NULL, 3); // Read back result
}
share
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...
ImageView - have height match width?
... ImageView to the parent. Set the ImageView width to 0dp and constrain its start and end to the parent. I'm not sure if setting the width to wrap_content or match_parent works in some cases, but I think this is a better way to get the child of a ConstraintLayout to fill its parent.
<android.supp...