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Postgresql SELECT if string contains
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137
You should use 'tag_name' outside of quotes; then its interpreted as a field of the record. Co...
Objective-C parse hex string to integer
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169
Joshua Weinberg's answer is mostly correct, however the 0x prefix is optional when scanning he...
Read user input inside a loop
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107
Read from the controlling terminal device:
read input </dev/tty
more info: http://compgr...
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...
Throttling method calls to M requests in N seconds
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Mathematical functions in Swift
... easily discover your playground platform by opening File Inspector (⌥⌘1).
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Convert decimal to binary in python [duplicate]
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231
all numbers are stored in binary. if you want a textual representation of a given number in bina...
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 '...