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Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7
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Try changing the contentInset property that UITableView inherits from UIScrollView.
self.tableView.contentInset = UIEdgeInsetsMake(-20, 0, 0, 0);
It's a workaround, but it works
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When do you use the “this” keyword? [closed]
...ass itself as a parameter to other methods
To have an object return itself from a method
To declare indexers
To declare extension methods
To pass parameters between constructors
To internally reassign value type (struct) value.
To invoke an extension method on the current instance
To cast itself to ...
enum - getting value of enum on string conversion
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return str(self.value)
x = 1
y = 2
Demo:
>>> from enum import Enum
>>> class D(Enum):
... def __str__(self):
... return str(self.value)
... x = 1
... y = 2
...
>>> D.x
<D.x: 1>
>>> print(D.x)
1
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Extract first item of each sublist
...ction called itemgetter to return the item at a specific index in a list:
from operator import itemgetter
Pass the itemgetter() function the index of the item you want to retrieve. To retrieve the first item, you would use itemgetter(0). The important thing to understand is that itemgetter(0) i...
switch() statement usage
...oshuaUlrich ...which benchmark function are you using? Not the obvious one from the "benchmark" package it seems?
– Tommy
Oct 19 '11 at 18:52
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How can I make the computer beep in C#?
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i have x86 but no sound is played from the internal speaker ! Only external speaker ?!!!!
– Rafik Bari
Feb 10 '13 at 13:46
1
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How to compare types
....GetType();
if (typeOfa == typeof(A)) {
}
typeof returns the Type object from a given class.
But if you have a type B, that inherits from A, then this comparison is false. And you are looking for IsAssignableFrom.
class B : A {
}
var b = new B();
var typeOfb = b.GetType();
if (typeOfb == typeof...
Using arrays or std::vectors in C++, what's the performance gap?
...tors to iterate over it.
Now the std::vector vs. native C++ arrays (taken from the internet):
// Comparison of assembly code generated for basic indexing, dereferencing,
// and increment operations on vectors and arrays/pointers.
// Assembly code was generated by gcc 4.1.0 invoked with g++ -O3 ...
Array.Add vs +=
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Because it's inherited from IList. Try Get-Member -InputObject @() will show this Add Method int IList.Add(System.Object value)
– Frode F.
Jun 29 '17 at 12:21
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Create an empty data.frame
...is just a bit safer in the sense that you'll have the correct column types from the beginning, hence if your code relies on some column type checking, it will work even with a data.frame with zero rows.
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