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Why is a combiner needed for reduce method that converts type in java 8
.... If your lambdas have the right properties (associative, non-interfering, etc.) a stream run sequentially or in parallel should give the same results.
Let's first consider the two-arg version of reduction:
T reduce(I, (T, T) -> T)
The sequential implementation is straightforward. The identit...
Is Java “pass-by-reference” or “pass-by-value”?
...nclature.
So, when calling a method
For primitive arguments (int, long, etc.), the pass by value is the actual value of the primitive (for example, 3).
For objects, the pass by value is the value of the reference to the object.
So if you have doSomething(foo) and public void doSomething(Foo foo...
Practical usage of setjmp and longjmp in C
...e setjmp started. So allocations, locks, half-initialized data structures, etc, are still allocated, locked and half-initialized when you get back to where setjmp was called. This means, you have to really care for the places where you do this, that it's REALLY ok to call longjmp without causing MOR...
How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c
...prints the SHA. If you "save" abbreviated SHAs (say, in logs, emails, IMs, etc.) and use them later to refer to commits, they might no longer be unique! While certainly unlikely for normal lengths like 7-12 characters, if you do go down to 4 or 5, and you get a few ten thousand new objects (or commi...
How to get JSON response from http.Get
...production as this answer originally demonstrated! (Which is what http.Get/etc call to). The reason is that the default client has no timeout set; if the remote server is unresponsive, you're going to have a bad day.
share
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Can Protractor and Karma be used together?
...gular Component (Service, Factory, Provider, Controller, Filter, Directive etc). Remember to keep your Controllers thin, so too many unit tests for latters is a red flag.
In a unit test, every other units of code, on which this unit depends (so-called unit's dependencies) should not be tested at th...
File name? Path name? Base name? Naming standard for pieces of a path
...nd files. Eg. C:\ is root path.
Folder or Folder Name: Widget, OddThinking etc in your case. This might be a Windows only convention (in fact its my own odd thinking :)), nevertheless I strongly object to blinry`s answer "Directory". Though for a normal user directory means the same as a folder (lik...
CSS selector for first element with class
...e > .red');
var first = redElements[0];
var second = redElements[1];
// etc
Although the .red:nth-of-type(1) solution in the original accepted answer by Philip Daubmeier works (which was originally written by Martyn but deleted since), it does not behave the way you'd expect it to.
For examp...
Remove sensitive files and their commits from Git history
...vate data from Git repos.
Create a private.txt file listing the passwords, etc, that you want to remove (one entry per line) and then run this command:
$ java -jar bfg.jar --replace-text private.txt my-repo.git
All files under a threshold size (1MB by default) in your repo's history will be scann...
Optimizing away a “while(1);” in C++0x
...likes. The DS9K will create nasal demons for any infinite loop with no I/O etc. (Therefore, the DS9K solves the halting problem.)
– Philip Potter
Sep 7 '10 at 8:05
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