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Why is the default value of the string type null instead of an empty string?
...ublic static string EmptyNull(this string str)
{
return str ?? "";
}
Now this works safely:
string str = null;
string upper = str.EmptyNull().ToUpper();
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How to get Android crash logs?
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You can use Apphance. This is a cross-platform service (now mainly Android, iOS with other platforms on their way) which allows to debug remotely any mobile device (Android, iOS now - others under development). It's much more than just a crashlog, in fact it is much more: logging,...
How can I find out if I have Xcode commandline tools installed?
...
if you want to know the install version of Xcode as well as Swift
language current version:
Use below simple command by using Terminal:
1. To get install Xcode Version
xcodebuild -version
2. To get install Swift language Version
sw...
Why are dates calculated from January 1st, 1970?
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Do you know if Kernighan and Thompson every expressed a reason for choosing that moment beyond "It's a round number slightly before we started building the thing."?
– dmckee --- ex-moderator kitten
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advantage of tap method in ruby
...iately clear. A reader would not have to read what is inside the block to know that an instance user is created.
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How to remove element from array in forEach loop?
...s changes. In this example, once you delete the first 'a', index number 1 now becomes 'c'. Therefore the first 'b' is not even evaluated. Since you didn't try to delete it, it just happened to be ok, but that is not the way. You should iterate through a reverse copy of the array, and then delete it...
What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
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This will download any required dependencies and install http-server.
Use
Now, from any directory, you can type:
http-server [path] [options]
Path is optional, defaulting to ./public if it exists, otherwise ./.
Options are [defaults]:
-p The port number to listen on [8080]
-a The host address to ...
Vertically centering a div inside another div [duplicate]
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Modern solution (transform)
Since transforms are fairly well supported now there is an easier way to do it.
CSS
.cn {
position: relative;
width: 500px;
height: 500px;
}
.inner {
position: absolute;
top: 50%; left: 50%;
transform: translate(-50%,-50%);
width: 200px;
height: 200...
How to Add Stacktrace or debug Option when Building Android Studio Project
... 0.8.10, the option is no longer in the Compiler > Gradle section, it's now in a separate section named Compiler (Gradle-based Android Project))
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Web workers without a separate Javascript file?
... Google Chrome only solution, seems Firefox 10 will support it, i don't know about other browsers
– 4esn0k
Dec 1 '11 at 13:07
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