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How to make an Android Spinner with initial text “Select One”?
...e from above into your project, e.g. into package com.example.customviews. Now in your layout xml, instead of <Spinner ...> use <com.example.customviews.NoDefaultSpinner ...> The rest of the code can stay the same. Don't forget to add the android:prompt attribute to the <com.example.c...
How can I know which parts in the code are never used?
... returns or conditions that always evaluate to true)
there is no option I know of to warn about unused catch blocks, because the compiler generally cannot prove that no exception will be thrown.
For the second kind, it's much more difficult. Statically it requires whole program analysis, and even ...
JavaScript dependency management: npm vs. bower vs. volo [closed]
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@Nate The name is simply where it started. NPM is now a very general purpose package management system. I regularly use npm to install front-end modules. There is no difference in using NPM for commonjs modules, vs amd, vs anything else. You could use npm just as well for no...
Why must we define both == and != in C#?
...ality operator, that all objects have, there is not an overload for it.1
Knowing that this is the case, the real question is: Why was this designed in this way and why doesn't the compiler figure it out on its own? A lot people are saying this wasn't a design decision, but I like to think it was t...
What is the difference between up-casting and down-casting with respect to class variable
...g) animal;
Basically what you're doing is telling the compiler that you know what the runtime type of the object really is. The compiler will allow the conversion, but will still insert a runtime sanity check to make sure that the conversion makes sense. In this case, the cast is possible because ...
Difference between ref and out parameters in .NET [duplicate]
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The line mentioned as "This is not C#" is now actually C# as of C# 7 docs.microsoft.com/en-us/dotnet/csharp/whats-new/…
– TJ Rockefeller
Apr 24 at 16:42
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Override configured user for a single git commit
... github server.
Make sure that you see a .git folder in that work folder. Now open that folder in Terminal/Console/CommandPrompt and try changing the username and email for that folder only by running the commands I specified above.
By changing that, you may now be able to access the GitHub server...
how to convert milliseconds to date format in android?
... as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes. Much of the java.time functionality is back-ported to Java 6 & Java 7 in the ThreeTen-Backport project. Further adapted for earlier Android in the ThreeTenABP project. See ...
Facebook Post Link Image
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Just to let you know, the only way to add an image to a post when using AppLinks (applinks.org) within the facebook app is to use the <link> tag, using a <meta> tag with og:image will NOT work.
– emerino
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performSelector may cause a leak because its selector is unknown
...e (the (void *) on the right hand side simply tells the compiler that you know what you're doing and not to generate a warning since the pointer types don't match).
Finally, you call the function pointer2.
Complex Example
When the selector takes arguments or returns a value, you'll have to change...