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Numeric for loop in Django templates
... a simple technique that works nicely for small cases with no special tags and no additional context. Sometimes this comes in handy
{% for i in '0123456789'|make_list %}
{{ forloop.counter }}
{% endfor %}
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What is a “callback” in C and how are they implemented?
From the reading that I have done, Core Audio relies heavily on callbacks (and C++, but that's another story).
9 Answers
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What is the printf format specifier for bool?
...t something like "%d" which would cause problems. The fputs, on the other hand, is a better option.
– paxdiablo
Oct 15 '14 at 2:40
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How can I format my grep output to show line numbers at the end of the line, and also the hit count?
...two null, - Line number : 2
example four null, - Line number : 4
Use command substitution to print out the total null count:
$ echo "Total null count :" $(grep -ic null myfile.txt)
Total null count : 2
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Easy way to test a URL for 404 in PHP?
I'm teaching myself some basic scraping and I've found that sometimes the URL's that I feed into my code return 404, which gums up all the rest of my code.
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How do I add a newline to a TextView in Android?
When I define a TextView in xml , how do I add a new line to it? \n seems not to work.
31 Answers
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Oracle取前N条记录方法 Oracle实现SELECT TOP N的方法 - 数据库(内核) - 清...
Oracle取前N条记录方法 Oracle实现SELECT TOP N的方法select * from ( select * from tablexxx order by xxx desc ) where rownum <= Noracle数据库不支持mysql中limit, top功...select * from ( select * from tablexxx order by xxx desc ) where rownum <= N
oracle数据库不支持mysql中li...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
Linux bcc tools使用总结（持续更新）Linux-bcc-toolsbcc及依赖安装（参考：INSTALL md）。1、execsnoop短时进程追踪工具，抓出短时间内谁在搞事情。使用场景：有些进程运行时间太短（可能是不断崩溃重启），因而使用其他工具无法捕获 ...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注IT技能提升
Linux bcc tools使用总结（持续更新）Linux-bcc-toolsbcc及依赖安装（参考：INSTALL md）。1、execsnoop短时进程追踪工具，抓出短时间内谁在搞事情。使用场景：有些进程运行时间太短（可能是不断崩溃重启），因而使用其他工具无法捕获 ...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
Linux bcc tools使用总结（持续更新）Linux-bcc-toolsbcc及依赖安装（参考：INSTALL md）。1、execsnoop短时进程追踪工具，抓出短时间内谁在搞事情。使用场景：有些进程运行时间太短（可能是不断崩溃重启），因而使用其他工具无法捕获 ...