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How to rename a single column in a data.frame?
I know if I have a data frame with more than 1 column, I can use
20 Answers
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Payment Processors - What do I need to know if I want to accept credit cards on my website? [closed]
This question talks about different payment processors and what they cost, but I'm looking for the answer to what do I need to do if I want to accept credit card payments?
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Count occurrences of a char in plain text file
...ch easier to remember/duplicate and customize, this is about three times (sorry, edit! botched the first test) faster than Vereb's answer.
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Difference between `data` and `newtype` in Haskell
... data structure at runtime.
So the key point here is that the construct for the newtype is guaranteed to be erased at compile time.
Examples:
data Book = Book Int Int
newtype Book = Book (Int, Int)
Note how it has exactly the same representation as a (Int,Int), since the Book construc...
Why do we need to install gulp globally and locally?
...ay that I need to install gulp first globally (with -g flag) and then one more time locally. Why do I need this?
7 Answers
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setResult does not work when BACK button pressed
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You need to overide the onBackPressed() method and set the result before the call to superclass, i.e
@Override
public void onBackPressed() {
Bundle bundle = new Bundle();
bundle.putString(FIELD_A, mA.getText().toString());
Intent mIntent = new Intent();
mIntent.putExtras(b...
Case-INsensitive Dictionary with string key-type in C#
...to use a case insensitive one. This is done using the appropriate constructor:
var dict = new Dictionary<string, YourClass>(
StringComparer.InvariantCultureIgnoreCase);
The constructor expects an IEqualityComparer which tells the dictionary how to compare keys.
StringComparer.Invar...
How do I get the key at a specific index from a Dictionary in Swift?
...e dictionary's startIndex by the integer that you wanted to subscript by, for example:
let intIndex = 1 // where intIndex < myDictionary.count
let index = myDictionary.index(myDictionary.startIndex, offsetBy: intIndex)
myDictionary.keys[index]
Another possible solution would be to initialize a...
Show spinner GIF during an $http request in AngularJS?
... .config(function ($httpProvider) {
$httpProvider.responseInterceptors.push('myHttpInterceptor');
var spinnerFunction = function (data, headersGetter) {
// todo start the spinner here
//alert('start spinner');
$('#mydiv').show();
return...
Disable a method in a ViewSet, django-rest-framework
...ather than extending ModelViewSet, why not just use whatever you need? So for example:
from rest_framework import viewsets, mixins
class SampleViewSet(mixins.RetrieveModelMixin,
mixins.UpdateModelMixin,
mixins.DestroyModelMixin,
viewsets....