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What does immutable mean?
...ure but with mutable elements. This happens in some variations of undoable union-find IIRC. Immutability has big advantages, but sharing part or all of a data structure as an optimisation is perfectly possible with mutables. Even if you want apparent immutability for other references, you can always...
How to create enum like type in TypeScript?
...llo"
They are not very useful on their own but can be combined in a type union to create a powerful (and useful) abstraction e.g.:
type CardinalDirection =
"North"
| "East"
| "South"
| "West";
function move(distance: number, direction: CardinalDirection) {
// ...
}
move(1,"N...
Non-recursive depth first search algorithm
...
DFS:
list nodes_to_visit = {root};
while( nodes_to_visit isn't empty ) {
currentnode = nodes_to_visit.take_first();
nodes_to_visit.prepend( currentnode.children );
//do something
}
BFS:
list nodes_to_visit = {root};
while( nodes_to_visit isn't ...
How to expand/collapse a diff sections in Vimdiff?
...w as mentioned can be used for navigating from pane to pane.
Now you can select a particular change alone and paste it to the other pane as follows.Here I am giving an eg as if I wanted to change my piece of code from pane 1 to pane 2 and currently my cursor is in pane1
Use Shift-v to highlight ...
Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
...多个组件吗？
Q: 悬浮窗可以拖动吗？
Q: 如何自定义悬浮窗样式？
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Floating View 扩展
Floating View 是一个免费的悬浮视图...
EC2 Instance Cloning
...he easier way is through the web management console:
go to the instance
select the instance and click on instance action
create image
Once you have an image you can launch another cloned instance, data and all. :)
shar...
XPath to select element based on childs child value
Trying to select an element based on the value of one of it's childrens childrens
1 Answer
...
Is there any way to delete local commits in Mercurial?
...ust activate the extension "strip" in:
File/Settings/Extensions/
Select strip
Then select the bottom revision from where you want to start striping, by doing right click on it, and selecting:
Modify history
Strip
Just like this:
In this example it will erase from the ...
Calculate difference in keys contained in two Python dictionaries
... 3:3}
>>> pprint(DeepDiff(t1, t2), indent=2)
{ 'type_changes': { 'root[2]': { 'newtype': <class 'str'>,
'newvalue': '2',
'oldtype': <class 'int'>,
'oldvalue': 2}}}
Value of an it...
How to hide soft keyboard on android after clicking outside EditText?
...d to do anything, it just has to exist for the parent view to be focusable/selectable, which is necessary for stealing the focus from the child EditText
– Jacob R
Aug 30 '17 at 21:20
...