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What do two question marks together mean in C#?
...or returns the first NON-NULL value from a chain. You can see this youtube video which demonstrates the whole thing practically.
But let me add more to what the video says.
If you see the English meaning of coalescing it says “consolidate together”. For example below is a simple coalescing cod...
How to access a mobile's camera from a web app?
...t="image/*" capture="user">
for user-facing (front) camera. To access video, substitute "video" for "image" in name.
Tested on iPhone 5c, running iOS 10.3.3, firmware 760, works fine.
https://www.w3.org/TR/html-media-capture/
...
Xcode Simulator: how to remove older unneeded devices?
... udid>` to launch (multiple) simulators
- `xcrun simctl io booted recordVideo — type=mp4 ./test.mp4` to record simulator video
- `xcrun simctl io booted screenshot ./screen.png` to make screenshot of simulator
- `xcrun simctl openurl booted https://google.com` to open URL in simulator
- `xcrun ...
How to use Git?
...d start at http://git-scm.com/documentation, there are documents and great video presentations for non-software-developer/cs users. Git for beginners have some basic stuff.
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Can I use CoffeeScript instead of JS for node.js?
...
Video Tutorials
I've seen a great tutorial series by Pedro Teixeira. He's been building an entire series on node tutorials. He includes reference to nodemon for auto detection and compilation and reloading of edited .coffee ...
What do pty and tty mean?
...
The second image you provided is a VT100 video terminal. This is still a physical TTY (albeit that TTY manufacturers in the 1970s had moved on from printers to video displays), and definitely not a PTY (terminal in software). It's worth noting that old-school video ...
URLs: Dash vs. Underscore [closed]
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@GerardONeill citation: this video by Google Webmasters: youtube.com/watch?v=AQcSFsQyct8. Per that video (admittedly now 6 years old and possibly not representing the contemporary status quo), foo_bar is treated as a single word while foo-bar is treated ...
How to add images to README.md on GitHub?
...es URL and paste it into your README.md file.
here is a detailed youTube video explained this in detail:
https://www.youtube.com/watch?v=nvPOUdz5PL4
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Android selector & text color
..., which behaves exactly as item in list (at least on 2.3)
res/layout/list_video_footer.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
...
Abstract classes in Swift Language
...e is actually a Software Engineer.
For more information, check great WWDC video about that feature: Building Better Apps with Value Types in Swift
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