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Getting all types that implement an interface
...ypes that implement an interface with C# 3.0/.NET 3.5 with the least code, and minimizing iterations?
17 Answers
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Null coalescing in powershell
...wershell 7 introduces native null coalescing, null conditional assignment, and ternary operators in Powershell.
Null Coalescing
$null ?? 100 # Result is 100
"Evaluated" ?? (Expensive-Operation "Not Evaluated") # Right side here is not evaluated
Null Conditional Assignment
$x = $null
$x ?...
bool to int conversion
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int x = 4<5;
Completely portable. Standard conformant. bool to int conversion is implicit!
§4.7/4 from the C++ Standard says (Integral Conversion)
If the source type is bool, the value false is converted to zero and
the value true is converted to one.
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Android: Access child views from a ListView
...yed using a ListView . It seems like I should get one of the TextView's and then use getTop() , but I can't figure out how to get a child view of a ListView .
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Does static constexpr variable inside a function make sense?
...ction (say, a large array), does it make sense to declare it both static and constexpr ? constexpr guarantees that the array is created at compile time, so would the static be useless?
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How to read a text file into a string variable and strip newlines?
...a huge PITA in the test/debug process, as it won't clean up the open file handles if you have to terminate prematurely or it runs into an exception.
– GoingTharn
Oct 24 '13 at 20:41
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How can I fill a div with an image while keeping it proportional?
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If I correctly understand what you want, you may leave the width and height attributes off the image to maintain aspect ratio and use flexbox to do the centering for you.
.fill {
display: flex;
justify-content: center;
align-it...
How to put an image in div with CSS?
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This answer by Jaap :
<div class="image"></div>
and in CSS :
div.image {
content:url(http://placehold.it/350x150);
}
you can try it on this link :
http://jsfiddle.net/XAh2d/
this is a link about css content
http://css-tricks.com/css-content/
This has been teste...
What's the difference between belongs_to and has_one?
What is the difference between a belongs_to and a has_one ?
5 Answers
5
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Delete an element from a dictionary
... del/assignment/etc. means you're going from constant time to linear time, and also using linear space. For small dicts, this is not a problem. But if you're planning to make lots of copies of large dicts, you probably want a different data structure, like a HAMT (as described in this answer).
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