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How to determine if binary tree is balanced?
...e: suppose the tree is massively unbalanced. Like, a million nodes deep on one side and three deep on the other. Is there a scenario in which this algorithm blows the stack? Can you fix the implementation so that it never blows the stack, even when given a massively unbalanced tree?
UPDATE: Donal F...
Can one AngularJS controller call another?
Is it possible to have one controller use another?
14 Answers
14
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How to change the commit author for one specific commit?
I want to change the author of one specific commit in the history. It's not the last commit.
19 Answers
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Is it safe to use -1 to set all bits to true?
... to do it exactly as you have shown, since it is the most straight forward one. Initialize to -1 which will work always, independent of the actual sign representation, while ~ will sometimes have surprising behavior because you will have to have the right operand type. Only then you will get the mos...
How to get just one file from another branch
... # from branch "experiment"
See also git how to undo changes of one file?
Update August 2019, Git 2.23
With the new git switch and git restore commands, that would be:
git switch master
git restore --source experiment -- app.js
By default, only the working tree is restored.
If you want ...
Generating v5 UUID. What is name and namespace?
...l hash or MAC.
Suppose you have a (key,value) store, but it only supports one namespace. You can generate a large number of distinct logical namespaces using type 3 or type 5 UUIDs. First, create a root UUID for each namespace. This could be a type 1 (host+timestamp) or type 4 (random) UUID so long...
What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association
In the example section of the @OneToMany JPA annotation reference :
6 Answers
6
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Check if one list contains element from the other
...
If you just need to test basic equality, this can be done with the basic JDK without modifying the input lists in the one line
!Collections.disjoint(list1, list2);
If you need to test a specific property, that's harder. I would recommend, by default,
list1.stream()
.map(...
Loop through a date range with JavaScript
Given two Date() objects, where one is less than the other, how do I loop every day between the dates?
10 Answers
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When to use ' (or quote) in Lisp?
...so it actually returns this, then is, then true, but you only see the last one returned. (this is and true are separate statements)
– Wezl
Jul 2 at 21:39
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