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C char array initialization
...to s
// no need to add s[i] = '\0'; because all unused slot is already set to '\0'
}
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String concatenation in Ruby
I am looking for a more elegant way of concatenating strings in Ruby.
16 Answers
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Ruby / Rails - Change the timezone of a Time, without changing the value
...ays convert this local time (using the zone) to utc. If you have Time.zone set then you can of course to
Time.zone.local_to_utc(t)
This won't use the timezone attached to t - it assumes that it's local to the time zone you are converting from.
One edge case to guard against here is DST transitio...
bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...trace的完整参考，见bpftrace完整参考。
该教程贡献者是Brendan Gregg, Netflix (2018), 基于他的DTrace教程系列 DTrace Tutorial。
1. 列出所有探针
bpftrace -l 'tracepoint:syscalls:sys_enter_*'
"bpftrace -l" 列出所有探测点，并且可以添加搜索项。...
How do I do a multi-line string in node.js?
With the rise of node.js, multi-line strings are becoming more necessary in JavaScript.
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How do I list all versions of a gem available at a remote site?
... editor after snippets, if snippets enabled
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How do you send a HEAD HTTP request in Python 2?
...'date', 'Sat, 20 Sep 2008 06:43:36 GMT'), ('content-type', 'text/html; charset=ISO-8859-1')]
There's also a getheader(name) to get a specific header.
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AngularJS ng-if with multiple conditions
... @CharanCherry Take a look into angular form validation. That way you can set all desired fields ng-required and check for form validity in for example an ng-disabled expression on the submit button. cfr fdietz.github.io/recipes-with-angular-js/using-forms/…
– Gecko
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Where to place $PATH variable assertions in zsh?
...etc/profile followed by $HOME/.profile. If the ENV environment variable is set on invocation, $ENV is sourced after the profile scripts. The value of ENV is subjected to parameter expansion, command substitution, and arithmetic expansion before being interpreted as a pathname. [man zshall, "Compatib...
how to convert from int to char*?
...nquer technique and once we now the maximum length of the string we simply set each character value individually. As shown in above speed tests the larger lengths get big performance penalties, but it's still far faster then the original loop method and no code has actually changed between the two m...