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How to convert a PNG image to a SVG? [closed]
...nm # PNG to PNM
potrace file.pnm -s -o file.svg # PNM to SVG
Explain options
potrace -s => Output file is SVG
potrace -o file.svg => Write output to file.svg
Example
Input file = 2017.png
convert 2017.png 2017.pnm
Temporary file = 2017.pnm
potrace 2017.pnm -s -o 2017.svg
...
Detecting iOS / Android Operating system
...dow.opera;
// Windows Phone must come first because its UA also contains "Android"
if (/windows phone/i.test(userAgent)) {
return "Windows Phone";
}
if (/android/i.test(userAgent)) {
return "Android";
}
// iOS detection from: http://stackoverflow.com/a/90...
计算统计特征（正态分布）函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ne void del_value(double v);
inline void change_value(double v1, double v2)
{
del_value(v1);
add_value(v2);
}
inline double sam_var(void) const { return _sam_stdev * _sam_stdev; }
inline double all_var(void) const { return _all_stdev * _all_stdev; }
};
class StdevCacul...
How to test equality of Swift enums with associated values
... switch self {
case .Name(let v1):
if case .Name(let v2) = st where v1 == v2 { return true }
case .Number(let i1):
if case .Number(let i2) = st where i1 == i2 { return true }
}
return false
}
}
func ==(lhs: SimpleToken, rhs: SimpleToken...
StringUtils 字符串工具扩展：强大的文本处理工具集 · App Inventor 2 中文网
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
“The page you are requesting cannot be served because of the extension configuration.” error message
... utility. Running the version found in \Windows\Microsoft.NET\Framework64\v2.0.50727 fixed the issue.
c:\Windows\Microsoft.NET\Framework64\v2.0.50727>aspnet_regiis.exe -i
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Detect iPad users using jQuery?
...ption is incorrect as iOS apps can and do customize their user agent. The main offender here is Facebook.
Compare these user agent strings from iOS devices:
# iOS Safari
iPad: Mozilla/5.0 (iPad; CPU OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B176 Safari/7534.4...
What's the difference between assignment operator and copy constructor?
...
why doing vector <A> v3 and then v3 = v2 (where v2 is a previously declared and containing elements vector<A>) calls my explicit A's copy constructor instead the operator= ? I was expecting operator= to be called instead of the copy constructor because my v...
How can I see the size of a GitHub repository before cloning it?
...tall jsonpretty json):
curl -u "YOURGITHUBUSERNAME" http://github.com/api/v2/json/repos/show/OWNER/REPOSITORY |
jsonpretty
Replace YOURGITHUBUSERNAME with your GitHub username (go figure).
Replace OWNER with the repository owner's Git username.
Replace REPOSITORY with the repository name.
Or ...
Can I use Twitter Bootstrap and jQuery UI at the same time?
...
just to update this, bootstrap v2 no longer conflicts with jquery ui
https://github.com/twbs/bootstrap/issues/171
Edit: as @Freshblood there are a few things that still conflict. However, as originally posted Twitter suggests that they are working on thi...