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remove all variables except functions
...
Here's a one-liner that removes all objects except for functions:
rm(list = setdiff(ls(), lsf.str()))
It uses setdiff to find the subset of objects in the global environment (as returned by ls()) that don't have mode function (as returned by lsf.str())
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How different is Objective-C from C++? [closed]
... type (see bbum's and Chuck's comments below). In comparison, a C++ member function signature contains the function name as well as just the types of the parameters/return (without their names).
C++ uses bool, true and false, Objective-C uses BOOL, YES and NO.
C++ uses void* and nullptr, Objective-C...
Can Android Studio be used to run standard Java projects?
...ick Ok.
My usage case:
My Android app relies on some precomputed files to function. These precomputed files are generated by some Java code. Since these two things go hand in hand, it makes the most sense to have both of these modules in the same project.
NEW - How to enable Kotlin in your standal...
Best practice for instantiating a new Android Fragment
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Some kotlin code:
companion object {
fun newInstance(first: String, second: String) : SampleFragment {
return SampleFragment().apply {
arguments = Bundle().apply {
putString("firstString", first)
putString("sec...
What is the __DynamicallyInvokable attribute for?
...del v3, loading it under CLR4 auto-upgrades to System.ServiceModel v4. The fun bit is that .NET 4.5 does an in place update to the bits of System.ServiceModel dropping in a new base class underneath and moves the property down a level.
– Ruben Bartelink
Feb 14 ...
Start an Activity with a parameter
...ct {
const val PARAM_GAME_ID = "PARAM_GAME_ID"
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val gameId = intent.getStringExtra(PARAM_GAME_ID)
// TODO use gameId
}
}
where gameId is String? (can be null)
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Java Generics Wildcarding With Multiple Classes
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Here's how you would do it in Kotlin
fun <T> myMethod(item: T) where T : ClassA, T : InterfaceB {
//your code here
}
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Windows batch: echo without new line
... or anything else on the computer which can get you rid of batch. Batch is fun however it's string capabilities are best for weekend challange.
– n611x007
Jul 9 '15 at 11:12
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How can I generate random alphanumeric strings?
...;
}
static void PerformTest(int repetitions, int keySize, Func<int, string> generator)
{
Dictionary<char, int> counts = new Dictionary<char, int>();
foreach (var ch in UniqueKey.KeyGenerator.chars) counts.Add(ch, 0);
for...
This app won't run unless you update Google Play Services (via Bazaar)
...level 14 and additionally install com.google.android.apps.maps-1.apk
Have fun.
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