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When do you use map vs flatMap in RxJava?
... useful one idea is to "flatten" this observable of observables (you might start to see where the name _flat_Map comes from). RxJava provides a few ways to flatten observables and for sake of simplicity lets assume merge is what we want. Merge basically takes a bunch of observables and emits wheneve...
Why we should not use protected static in java
... be static, then I make it static. - This will get you in trouble when you start using mock frameworks for unit testing. But this leads us to a different topic ...
– barfuin
Jun 18 '14 at 16:20
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How do I pull my project from github?
...wiped out your computer and want to checkout your project again, you could start by doing the below initial settings:
git config --global user.name "Your Name"
git config --global user.email youremail@domain.com
Login to your github account, go to the repository you want to clone, and copy the UR...
Separation of JUnit classes into special test package?
...o try searching among a couple of hundred test classes, each of whose name starts with Test...
Update inspired by @Ricket's comment: this way test classes (typically) show up right after their tested buddy in a project-wise alphabetic listing of class names. (Funny that I am benefiting from this da...
ScalaTest in sbt: is there a way to run a single test without tags?
...ec -- -z "works with multiple arguments"
This will run the two tests that start with "works with":
testOnly *CardiBSpec -- -z "works with"
I can't get the -t option to run any tests in the CardiBSpec file. This command doesn't run any tests:
testOnly *CardiBSpec -- -t "works with multiple argumen...
Definition of a Balanced Tree
...h of the longest path from that node downward to a leaf, counting both the start and end vertices of the path.
A node in a tree is height-balanced if the heights of its subtrees differ by no more than 1.
A tree is height-balanced if all of its nodes are height-balanced.
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Difference between int32, int, int32_t, int8 and int8_t
...across
typedef short INT16;
typedef int INT32;
typedef long INT64;
Starting from C99, the designers added stdint.h header file that essentially leverages similar typedefs.
On a windows based system, you may see entries in stdin.h header file as
typedef signed char int8_t;
typedef s...
What is the difference between procedural programming and functional programming? [closed]
... the signature instead of returns UInt after it.
( You can get away with starting the range with 2 as the multiply "operator" will return 1 when called without any arguments )
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Applicatives compose, monads don't
...th n-effects to a v-value, where the m-effects finish before the n-effects start (hence the need for swap). If you just want to interleave m-effects with n-effects, then composition is perhaps too much to ask!
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What is the type of lambda when deduced with “auto” in C++11?
...mp;& t) { return __PRETTY_FUNCTION__; }, and strip off the extra if it starts to get crowded. I prefer to see the steps shown in template substitution. If you're missing __PRETTY_FUNCTION__, there are alternatives for MSVC, etc., but the results are always compiler-dependent for the same reason ...