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Why did my Git repo enter a detached HEAD state?
... a branch, and get a detach HEAD, except:
it has an explicit --detach option
To check out commit HEAD~3 for temporary inspection or experiment without creating a new branch:
git switch --detach HEAD~3
HEAD is now at 9fc9555312 Merge branch 'cc/shared-index-permbits'
it cannot detached by...
How can I disable the UITableView selection?
...
For me, the following worked fine:
tableView.allowsSelection = false
This means didSelectRowAt# simply won't work. That is to say, touching a row of the table, as such, will do absolutely nothing. (And hence, obviously, there will never be a selected-animation.)
(Note that if, o...
How to play audio?
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If you don't want to mess with HTML elements:
var audio = new Audio('audio_file.mp3');
audio.play();
function play() {
var audio = new Audio('https://interactive-examples.mdn.mozilla.net/media/examples/t-rex-roar.mp3');
audio.play();
}
<button onclick="play()"&...
How do I make sure every glyph has the same width?
...-width class instead of having to edit the CSS.
http://fortawesome.github.io/Font-Awesome/3.2.1/examples/#navigation
Since 4.0, you should use fa-fw:
4.x https://fontawesome.com/v4.7.0/examples/#fixed-width
5.x https://fontawesome.com/how-to-use/on-the-web/styling/fixed-width-icons
Thanks @kales...
How to convert a PNG image to a SVG? [closed]
... # 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
Output ...
How to link to a named anchor in Multimarkdown?
I have come across a number of mentions of MultiMarkdown's support for internal links / named anchors but I am unable to find a single example of how to actually do it.
...
UIButton: Making the hit area larger than the default hit area
I have a question dealing with UIButton and its hit area. I am using the Info Dark button in interface builder, but I am finding that the hit area is not large enough for some people's fingers.
...
腾讯Tencent开源框架介绍（持续更新） - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...架，Tars 是将腾讯内部使用的微服务架构 TAF（Total Application Framework）多年的实践成果总结而成的开源项目，成熟度及稳定性高。支持多语言的高性能 RPC 开发框架和配套一体化的服务治理平台。
毫无疑问，微服务的核心框架采...
Difference between an API and SDK
...
Piece of cake:
an API is an interface. It's like the specification of the telephone system or the electrical wiring in your house. Anything* can use it as long as it knows how to interface. You can even buy off-the-shelf software to use a particular API, just as you can buy off the shelf...
Set the maximum character length of a UITextField
... class has no max length property, it's relatively simple to get this functionality by setting the text field's delegate and implementing the following delegate method:
Objective-C
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)s...