大约有 2,347 项符合查询结果（耗时：0.0108秒） [XML]
Makefile经典教程（入门必备） - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...，他只管执行所定义的命令。make会比较targets文件和prerequisites文件的修改日期，如果prerequisites文件的日期要比targets文件的日期要新，或者target不存在的话，那么，make就会执行后续定义的命令。
make会在当前目录下找...
How to use if - else structure in a batch file?
I have a question about if - else structure in a batch file. Each command runs individually, but I couldn't use "if - else" blocks safely so these parts of my programme doesn't work. How can I do make these parts run? Thank you.
...
Difference between \n and \r?
...ystems, \n is the code for end-of-line, \r means nothing special
as a consequence, in C and most languages that somehow copy it (even remotely), \n is the standard escape sequence for end of line (translated to/from OS-specific sequences as needed)
in old Mac systems (pre-OS X), \r was the code for ...
NGINX to reverse proxy websockets AND enable SSL (wss://)?
...gust 2012, so if you are from the future you should do your homework.
Prerequisites
Assumes you are using CentOS:
Remove current instance of NGINX (suggest using dev server for this)
If possible, save your old NGINX config files so you can re-use them (that includes your init.d/nginx script)
yum in...
How do I navigate in the results of Diff
... : return
Next page : space bar
Previous page : w
Quit viewing the diff : q
Help : h
share
|
improve this answer
|
follow
...
How to break out of multiple loops?
...ops, what do I do' refactoring may not make sense.
– quick_dry
Oct 10 '08 at 1:11
using an exception may be easier whe...
Combine two columns of text in pandas dataframe
...taframe in Python using pandas. Two of these columns are named Year and quarter . I'd like to create a variable called period that makes Year = 2000 and quarter= q2 into 2000q2 .
...
What is the email subject length limit?
... "folding".
subject is defined as "unstructured" in RFC 5322
here's some quotes ([...] indicate stuff i omitted)
3.6.5. Informational Fields
The informational fields are all optional. The "Subject:" and
"Comments:" fields are unstructured fields as defined in section
2.2.1, [...]
2.2.1. ...
Check whether a string contains a substring
...s what Perl is famous for:
if ($mystring =~ /s1\.domain\.com/) {
print qq("$mystring" contains "s1.domain.com"\n);
}
The backslashes are needed because a . can match any character. You can get around this by using the \Q and \E operators.
my $substring = "s1.domain.com";
if ($mystring =~ ...
How can I redirect HTTP requests made from an iPad?
...around this limitation of the iPad is to use a HTTP proxy server, such as Squid running on another machine where you can edit the hosts file.
On the iPad Under Settings -> Network -> Wi-Fi -> (Your network) There is a HTTP Proxy setting which can be set to manual. Enter you proxy informat...