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How to round up to the nearest 10 (or 100 or X)?
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This actually also works when x is a vector:
> roundUp(c(0.0023, 3.99, 10, 1003))
[1] 1e-02 1e+01 1e+01 1e+04
..but if you want to round to a "nice" number, you first need to define what a "nice" number is. The following lets us define "nice" as a vector with nice base values from 1 to 10....
How to run a shell script at startup
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The name of the script is /etc/init.d/apex
#!/bin/bash
# chkconfig: 345 99 10
# Description: auto start apex listener
#
case "$1" in
'start')
su - oracle -c "cd /opt/apex ; java -jar apex.war > logs/apex.log 2>logs/apex_error.log &";;
'stop')
echo "put something to shutdown or k...
Using Sass Variables with CSS3 Media Queries
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woerndlwoerndl
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Replace input type=file by an image
...tinghardsetting
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Handlebars.js Else If
... CarlCarl
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Discuz X 首页白板解决之道 - 建站技术 - 清泛IT论坛，有思想、有深度
...现问题的大致位置。可以毫不夸张地说，排除法能够解决99.99%的疑难杂症。
3、白板的最核心原因是调用函数 ob_end_clean() 函数导致的，先将输出内容清掉再把备份内容重新输出，如果重新输出的某个地方有问题那网页就白板了...
How to sort by two fields in Java?
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River
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answered May 23 '16 at 0:13
Bradley DBradley D
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How to do an update + join in PostgreSQL?
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AlvinAlvin
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How to convert ‘false’ to 0 and ‘true’ to 1 in Python
...e' or 'false' it's a value error. If the input is not a string you'll get (99.99% of the times) an AttributeError instead, hence it's useless to catch for ValueError and re-raise it as TypeError.
– Bakuriu
Dec 30 '13 at 13:55
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How does delete[] know it's an array?
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The compiler doesn't know it's an array, it's trusting the programmer. Deleting a pointer to a...