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How can I switch my git repository to a particular commit
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Get position of UIView in respect to its superview's superview
...ew.convert(buttons.frame, from:secondView)
Documentation reference:
https://developer.apple.com/documentation/uikit/uiview/1622498-convert
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Use of alloc init instead of new
...
There are a bunch of reasons here: http://macresearch.org/difference-between-alloc-init-and-new
Some selected ones are:
new doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you...
How to ignore a property in class if null, using json.net
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As can be seen in this link on their site (http://james.newtonking.com/archive/2009/10/23/efficient-json-with-json-net-reducing-serialized-json-size.aspx) I support using [Default()] to specify default values
Taken from the link
public class Invoice
{
public st...
python generator “send” function purpose?
...is an artificial (non-useful) explanatory example:
>>> def double_inputs():
... while True:
... x = yield
... yield x * 2
...
>>> gen = double_inputs()
>>> next(gen) # run up to the first yield
>>> gen.send(10) # goes into 'x' variabl...
not None test in Python [duplicate]
...r of the latter two, since val could potentially be of a type that defines __eq__() to return true when passed None.
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What is Bit Masking?
...esult: 00000101b
Masking is implemented using AND, so in C we get:
uint8_t stuff(...) {
uint8_t mask = 0x0f; // 00001111b
uint8_t value = 0x55; // 01010101b
return mask & value;
}
Here is a fairly common use-case: Extracting individual bytes from a larger word. We define the high-...
How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
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querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
... browser support.
querySelector is more useful when you want to use more complex selectors.
e.g. All list items descended from an element that is a member of the foo class: .foo li
document.querySelector("#view:_id1:inputText1") it doesn't work. But writing document.getElementById("view:_id1:...
querySelector search immediate children
...){
if(nodes[i].parentNode === elem) return nodes[i];
}
}
see http://jsfiddle.net/Lgaw5/8/
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