大约有 43,200 项符合查询结果（耗时：0.0404秒） [XML]
ZeroMQ的学习和研究（PHP代码实例） - C/C++ - 清泛网 - 专注C/C++及内核技术
...息通信。几年的竞争下来，Apache 基金会旗下的符合 AMQP/1.0标准的 RabbitMQ 已经得到了广泛的认可，成为领先的 MQ 项目。
与 RabbitMQ 相比，ZMQ 并不像是一个传统意义上的消息队列服务器，事实上，它也根本不是一个服务器，它更...
How do I determine height and scrolling position of window in jQuery?
...
|
edited Apr 6 '17 at 18:35
Michał Perłakowski
63.1k2121 gold badges133133 silver badges148148 bronze badges
...
Check if a string contains a substring in SQL Server 2005, using a stored procedure
...
401
CHARINDEX() searches for a substring within a larger string, and returns the position of the mat...
Postgresql SELECT if string contains
...
137
You should use 'tag_name' outside of quotes; then its interpreted as a field of the record. Co...
mongodb: insert if not exists
...
157
Sounds like you want to do an "upsert". MongoDB has built-in support for this. Pass an extra...
Converting from a string to boolean in Python?
...e'
Or to checks against a whole bunch of values:
s.lower() in ['true', '1', 't', 'y', 'yes', 'yeah', 'yup', 'certainly', 'uh-huh']
Be cautious when using the following:
>>> bool("foo")
True
>>> bool("")
False
Empty strings evaluate to False, but everything else evaluates to...
How to remove “onclick” with JQuery?
...
Old Way (pre-1.7):
$("...").attr("onclick", "").unbind("click");
New Way (1.7+):
$("...").prop("onclick", null).off("click");
(Replace ... with the selector you need.)
// use the "[attr=value]" syntax to avoid syntax errors wit...
Read user input inside a loop
...
107
Read from the controlling terminal device:
read input </dev/tty
more info: http://compgr...
Hexadecimal To Decimal in Shell Script
... to do it in the shell or with an external program:
With bash:
$ echo $((16#FF))
255
with bc:
$ echo "ibase=16; FF" | bc
255
with perl:
$ perl -le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c 'print(int("FF", 16))'
255
with ruby:
$ ruby -e '...