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Can I export a variable to the environment from a bash script without sourcing it?
... source or . to execute the script in the context of the calling shell:
$ cat set-vars1.sh
export FOO=BAR
$ . set-vars1.sh
$ echo $FOO
BAR
Another way is to have the script, rather than setting an environment variable, print commands that will set the environment variable:
$ cat set-vars2.sh
#...
How can I represent an 'Enum' in Python?
...enum import Enum # for the aenum version
Animal = Enum('Animal', 'ant bee cat dog')
Animal.ant # returns <Animal.ant: 1>
Animal['ant'] # returns <Animal.ant: 1> (string lookup)
Animal.ant.name # returns 'ant' (inverse lookup)
or equivalently:
class Animal(Enum):
ant = 1
b...
count (non-blank) lines-of-code in bash
...
cat foo.c | sed '/^\s*$/d' | wc -l
And if you consider comments blank lines:
cat foo.pl | sed '/^\s*#/d;/^\s*$/d' | wc -l
Although, that's language dependent.
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How do you detect Credit card type based on number?
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The credit/debit card number is referred to as a PAN, or Primary Account Number. The first six digits of the PAN are taken from the IIN, or Issuer Identification Number, belonging to the issuing bank (IINs were previously known as BIN — Bank Identification Numbers — so you may see refe...
How to concatenate multiple lines of output to one line?
If I run the command cat file | grep pattern , I get many lines of output. How do you concatenate all lines into one line, effectively replacing each "\n" with "\" " (end with " followed by space)?
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Split string into array of character strings
...
"cat".split("(?!^)")
This will produce
array ["c", "a", "t"]
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Stack smashing detected
...ikely a segmentation fault as you are trying to access an illegal memory location. Note that -fstack-protector should always be turned on for release builds as it is a security feature.
You can get some information about the point of overflow by running the program with a debugger. Valgrind doesn'...
微软开源 图像动画开发框架：openframeworks - 开源 & Github - 清泛网 - ...
...官网的演示视频。
openframeworks（http://www.openframeworks.cc/ ）是C++为基准的简洁开发框架，擅长开发图像和动画。能在多个平台上运行(PC, Mac, Linux, iPhone)。
主要有以下特征：
◇ 通过编码来制作图像和动画。
◇ 免费使用
...
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来自Office2013激活吧
PRO PLUS:
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Cross compile Go on OSX?
...to be logged in as super user. On Mac you may need to enable/configure SU access (it is not available by default), but if you have managed to install Go you possibly already have root access.
2) Once you have all cross compilers built, you can happily cross compile your application by using the fol...