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二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
.../qr_code.pdf
基础知识
首先，我们先说一下二维码一共有40个尺寸。官方叫版本Version。Version 1是21 x 21的矩阵，Version 2是 25 x 25的矩阵，Version 3是29的尺寸，每增加一个version，就会增加4的尺寸，公式是：(V-1)*4 + 21（V是版本号） 最...
Working with select using AngularJS's ng-options
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800
One thing to note is that ngModel is required for ngOptions to work... note the ng-model="blah"...
Is there any way to redraw tmux window when switching smaller monitor to bigger one?
...-option -t "$tmp" set-remain-on-exit on
tmux new-window -kt "$tmp":0 \
'echo "Use Prefix + L (i.e. ^B L) to return to session."'
fi
# switch any clients attached to the target session to the temp session
session="$1"
for client in $(tmux list-clients -t "$session...
How can I round up the time to the nearest X minutes?
...icks * d.Ticks, dt.Kind);
}
Example:
var dt1 = RoundUp(DateTime.Parse("2011-08-11 16:59"), TimeSpan.FromMinutes(15));
// dt1 == {11/08/2011 17:00:00}
var dt2 = RoundUp(DateTime.Parse("2011-08-11 17:00"), TimeSpan.FromMinutes(15));
// dt2 == {11/08/2011 17:00:00}
var dt3 = RoundUp(DateTime.Parse...
Collapsing Sidebar with Bootstrap
...) {
.row-offcanvas {
position: relative;
-webkit-transition: all 0.25s ease-out;
-moz-transition: all 0.25s ease-out;
transition: all 0.25s ease-out;
}
.row-offcanvas-right
.sidebar-offcanvas {
right: -41.6%;
}
.row-offcanvas-left
.sidebar-offcanvas {
left: -41...
Parsing JSON using Json.net
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James Newton-King
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answered Dec 31 '08 at 10:37
Marc Gravell♦Marc Gravell
...
Is the Javascript date object always one day off?
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101
Notice that Eastern Daylight Time is -4 hours and that the hours on the date you're getting bac...
Why is Swift compile time so slow?
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70
Well, it turned out that Rob Napier was right. It was one single file (actually one method) that...
Check if page gets reloaded or refreshed in JavaScript
...
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