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libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
libevent+protobuf轻松搭建tcpserver1. 基础代码 设置某fd为O_NONBLOCK模式 int set_non_block(int fd); server端socket流程:socket(),setsoc...1. 基础代码
// 设置某fd为O_NONBLOCK模式
int set_non_block(int fd);
// server端socket流程:socket(),setsockopt(),bi...
Rotated elements in CSS that affect their parent's height correctly
...r-inner {
padding: 50% 0;
height: 0;
}
.element-to-rotate {
display: block;
transform-origin: top left;
/* Note: for a CLOCKWISE rotation, use the commented-out
transform instead of this one. */
transform: rotate(-90deg) translate(-100%);
/* transform: rotate(90deg) translate(0, -...
What are all the common ways to read a file in Ruby?
...do |line|
puts line
end
end
# File is closed automatically at end of block
It is also possible to explicitly close file after as above (pass a block to open closes it for you):
f = File.open("my/file/path", "r")
f.each_line do |line|
puts line
end
f.close
...
How to align a div to the top of its parent but keeping its inline-block behaviour?
... width: 50px;
height: 50px;
background: #999;
display: inline-block;
vertical-align: top; /* here */
}
Apply it to #box3 too.
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Threading in a PyQt application: Use Qt threads or Python threads?
...
Good answer, but I think you should be using the blockquote button to clearly show where you are in fact not summarizing but quoting Giovanni Bajo from the mailing list :)
– c089
Oct 26 '10 at 9:15
...
How do I give text or an image a transparent background using CSS?
...pane technique”:
.pane, .pane > .back, .pane > .cont { display: block; }
.pane {
position: relative;
}
.pane > .back {
position: absolute;
width: 100%; height: 100%;
top: auto; bottom: auto; left: auto; right: auto;
}
.pane > .cont {
position: relative;
z-in...
How to concatenate columns in a Postgres SELECT?
...
PHP's Laravel framework,
I am using search first_name, last_name Fields consider like Full Name Search
Using || symbol Or concat_ws(), concat() methods
$names = str_replace(" ", "", $searchKey); ...
How can you find the height of text on an HTML canvas?
...r text = $('<span>Hg</span>').css({ fontFamily: font });
var block = $('<div style="display: inline-block; width: 1px; height: 0px;"></div>');
var div = $('<div></div>');
div.append(text, block);
var body = $('body');
body.append(div);
try {
va...
Timing a command's execution in PowerShell
...and to a variable, like $t = Measure-Command {<<your command or code block>>} . Try it out and then type $t at the prompt to see your results and all the properties you have access to, like $t.Milliseconds, $t.TotalSeconds, etc. Then we can write to whatever output we want, for instanc...
How to sum all column values in multi-dimensional array?
...);
Example with array_walk_recursive() for the general case
Also, since PHP 5.5 you can use the array_column() function to achieve the result you want for the exact key, [gozhi], for example :
array_sum(array_column($input, 'gozhi'));
Example with array_column() for the specified key
If you ...