大约有 15,900 项符合查询结果（耗时：0.0205秒） [XML]
How to trim whitespace from a Bash variable?
...variable containing leading, trailing, and intermediate whitespace:
FOO=' test test test '
echo -e "FOO='${FOO}'"
# > FOO=' test test test '
echo -e "length(FOO)==${#FOO}"
# > length(FOO)==16
How to remove all whitespace (denoted by [:space:] in tr):
FOO=' test test test '
FOO_NO_WHITESP...
When and how should I use a ThreadLocal variable?
...y Java 8, does this change this answer in any way?
– Evil Washing Machine
Sep 14 '15 at 21:34
14
...
How do you set a default value for a MySQL Datetime column?
...ith DATETIME...
But you can do it with TIMESTAMP:
mysql> create table test (str varchar(32), ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP);
Query OK, 0 rows affected (0.00 sec)
mysql> desc test;
+-------+-------------+------+-----+-------------------+-------+
| Field | Type | Null | Key | ...
PreparedStatement with list of parameters in a IN clause [duplicate]
....size(); i++ ) {
builder.append("?,");
}
String stmt = "select * from test where field in ("
+ builder.deleteCharAt( builder.length() -1 ).toString() + ")";
PreparedStatement pstmt = ...
And then happily set the params
int index = 1;
for( Object o : possibleValue ) {
pstm...
Python string class like StringBuilder in C#?
... Note that this article was written based on Python 2.2. The tests would likely come out somewhat differently in a modern version of Python (CPython usually successfully optimizes concatenation, but you don't want to depend on this in important code) and a generator expression where he...
Bash empty array expansion with `set -u`
...
I don't see you testing "${arr[@]}". Am I missing something? From what I can see it works at least in 5.x.
– x-yuri
May 9 at 17:49
...
Clearing a string buffer/builder after loop
... the string mutability, not from saving the instantiation. here's a quick test of 1e8 iterations: inside loop (2.97s): ideone.com/uyyTL14w, outside loop (2.87s): ideone.com/F9lgsIxh
– Mark Elliot
Feb 11 '10 at 5:46
...
Which is better, return value or out parameter?
...out parameters are slightly harder to use with reflection and usually make testing harder too. (More effort is usually put into making it easy to mock return values than out parameters). Basically there's nothing I can think of that they make easier...
Return values FTW.
EDIT: In terms of what's g...
Disable same origin policy in Chrome
...(or chromium) and restart with the --disable-web-security argument. I just tested this and verified that I can access the contents of an iframe with src="http://google.com" embedded in a page served from "localhost" (tested under chromium 5 / ubuntu). For me the exact command was:
Note : Kill all...
Database development mistakes made by application developers [closed]
...any developers forget this and start treating a "means" as an "end". Unit testing is a prime example of this.
I once worked on a system that had a huge hierarchy for clients that went something like:
Licensee -> Dealer Group -> Company -> Practice -> ...
such that you had to join a...