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Regex empty string or email
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Make sure to read up on how extremely complicated email validation is, before trying to use RegEx to do it. stackoverflow.com/questions/201323/…
– bryan kennedy
Sep 24 '14 at 17:20
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Difference between a clickable ImageView and ImageButton
... significant difference between an ImageView that's set to be clickable, compared with an ImageButton ?
3 Answers
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How does '20 seconds' work in Scala?
How does the following compile:
2 Answers
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Declaration suffix for decimal type
...ou can also refer to this Doc, which is more user-friendly: docs.microsoft.com/en-us/dotnet/csharp/language-reference/…
– Douglas Gaskell
Jul 29 '19 at 18:07
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Android gradle: buildtoolsVersion vs compileSdkVersion
What's the difference between buildtoolsVersion vs compileSdkVersion in the build.gradle for an Android project?
2 Answ...
What does FETCH_HEAD in Git mean?
...te; FETCH_HEAD points to the tip of this branch (it stores the SHA1 of the commit, just as branches do). git pull then invokes git merge, merging FETCH_HEAD into the current branch.
The result is exactly what you'd expect: the commit at the tip of the appropriate remote branch is merged into the co...
Differences between Intent and PendingIntent
...An Android Intent is an object carrying an intent, i.e. a message from one component to another component either inside or outside of the application. Intents can communicate messages among any of the three core components of an application -- Activities, Services, and BroadcastReceivers.
The inten...
Are HLists nothing more than a convoluted way of writing tuples?
.... shapeless provides a form of polymorphic function value which allows the compiler to select type-specific cases in exactly the way you're doubtful about. For instance,
// size is a function from values of arbitrary type to a 'size' which is
// defined via type specific cases
object size extends P...