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Best way to convert strings to symbols in hash
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In Ruby >= 2.5 (docs) you can use:
my_hash.transform_keys(&:to_sym)
Using older Ruby version? Here is a one-liner that will copy the hash into a new one with the keys symbolized:
my_hash = my_hash.inject({}){|memo,(k,v)| memo[k.to_sym] = v; memo}
With Rails y...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...work described in the paper "Rectangle Detection based on a Windowed Hough Transform".
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Difference between array_map, array_walk and array_filter
...ept that instead of modifying in-place it will return a new array with the transformed elements.
array array_filter ( array $input [,
callback $callback ] )<-return array
array_filter with function F, instead of transforming the elements, will remove any elements for which F(x) is not t...
CSS: center element within a element
...db;
}
.inner-element{
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
/* or 3d alternative if you will add animations (smoother transitions) */
transform: translate3d(-50%,-50%,0);
/* Other styling stuff */
width: 100px;
height: 100px;
background-co...
simulate background-size:cover on or
... absolute;
left: 50%; /* % of surrounding element */
top: 50%;
transform: translate(-50%, -50%); /* % of current element */
}
Of course, vw, vh, and transform are CSS3, so if you need compatibility with much older browsers, you'll need to use script.
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[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...n-state);
stroke: #fff;
stroke-width: 0.5px;
transform-origin: center;
opacity: 0;
r: max(1vw, 11px);
cy: 50%;
filter: saturate(2) opacity(0.85);
}
.dots:first-child {
fill: var(--quaternary);
}
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Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...不细说了。
Dokan客户端则由Delphi开发，其参考代码来自网络上的Delphi例子，比如Mirror Driver。
本篇文章主要是Dokan开发过程的一些总结，所以不会对Dokan本身做介绍，与Dokan有关的资料及代码，请到google里搜索，或到Dokan的官方网...
Can I change the height of an image in CSS :before/:after pseudo-elements?
...ore practical.
.pdflink:after {
content: url('/images/pdf.png');
transform: scale(.5);
}
http://jsfiddle.net/Nwupm/
Drawbacks: you need to know the intrinsic dimensions of the image, and it leaves you with some whitespace, which I can't get rid of ATM.
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How to make an image center (vertically & horizontally) inside a bigger div [duplicate]
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I used this, but removed margin bits and adding -webkit-transform: translateY(-50%); -moz-transform: translateY(-50%); -ms-transform: translateY(-50%); transform: translateY(-50%);. Gives more generic solution that does need element size.
– Jon
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Fast and responsive interactive charts/graphs: SVG, Canvas, other?
...geometric or semantic zooming.
Geometric zooming means you apply a single transform to the entire viewport: when you zoom in, circles become bigger. Semantic zooming in contrast means you apply transforms to each circle individually: when you zoom in, the circles remain the same size but they sprea...