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Lock-free multi-threading is for real threading experts
...and seem to scale well to 750 CPUs.
If you are not afraid to venture into Linux territory, the following article provides more insight into the internals of current memory architectures and how cache-line sharing can destroy performance: What every programmer should know about memory.
@Ben made ma...
Getting distance between two points based on latitude/longitude
...focuses just on answering the specific bug OP ran into.
It's because in Python, all the trig functions use radians, not degrees.
You can either convert the numbers manually to radians, or use the radians function from the math module:
from math import sin, cos, sqrt, atan2, radians
# approxima...
How to break out of a loop from inside a switch?
...e default behaviour (a difficult task using an embedded switch and goto).
Python Example
Contrast the following answer (to a Python question) that was posted on StackOverflow:
Loop forever.
Ask the user to input their choice.
If the user's input is 'restart', continue looping forever.
Otherwise,...
当ORACLE 11G 遇到 JUNIPER 防火墙 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...21端口出去，并且结合网上的一些帖子。判断在ORACLE 11G在linux上是不存在端口随机的问题。
第三个说法，PL/SQL 客户端的安装方式比较特殊需要特殊的步骤原文地址如下
http://www.cnblogs.com/gulvzhe/archive/2012/08/27/2658657.html
还是不...
Where are an UIWebView's cookies stored?
... the .binarycookies directly, you can run a script:
Download and install Python
Download BinaryCookieReader.py
Run "Python BinaryCookieReader.py" on the terminal
as you can see, output log contains detail cookies description
...
What is the minimum valid JSON?
...e "JSON text", but was amended to accept any "JSON value" in version 5.2.1
Python's json.loads accepts any "JSON value" according to examples on this manual page
the validator at http://jsonlint.com expects a full "JSON text"
the Ruby JSON module will only accept a full "JSON text" (at least accordi...
What Java ORM do you prefer, and why? [closed]
...d it works great. I think the difference might be in the dynamic nature of python (and perl). Using an ORM in Java is a pain. But in dynamic languages it can be really expressive. There are some great projects to embed ORM operations like DSLs in Python and are great.
– santiag...
How to make phpstorm display line numbers by default?
...
Works on Linux too
– felipsmartins
Mar 29 '16 at 14:24
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How to extend an existing JavaScript array with another array, without creating a new array
...to extend an existing JavaScript array with another array, i.e. to emulate Python's extend method.
16 Answers
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Associative arrays in Shell scripts
...
Another non-bash 4 way.
#!/bin/bash
# A pretend Python dictionary with bash 3
ARRAY=( "cow:moo"
"dinosaur:roar"
"bird:chirp"
"bash:rock" )
for animal in "${ARRAY[@]}" ; do
KEY=${animal%%:*}
VALUE=${animal#*:}
printf "%s likes to %s.\n"...