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Java 8 Iterable.forEach() vs foreach loop
...of calling lambdas (which is small), but to the sophisticated analysis and transformation that the modern JIT compiler performs on running code.
If you do need parallelism, it is probably much faster and not much more difficult to use an ExecutorService. Streams are both automagical (read: don't k...
编译失败！ Error: Your build failed due to an error in the AAPT stage,...
...; [java] INFO: BUILD 1 FINISHED
aia包属性有问题，导致的原因未知，待探索。。。
目前最好的办法就是重新建立一个项目，组件和代码拷贝过来。
What encoding/code page is cmd.exe using?
... @user200783, decomposed form isn't supported; usually one can transform to an NFC equivalent. Also, the console in Western locales doesn't allow mixing full-width and half-width glyphs. Also, when using codepage 65001 (UTF-8), prior to Windows 8 WriteFile reports the number of character...
Bootstrap NavBar with left, center or right aligned items
...{
.navbar-nav.navbar-center {
position: absolute;
left: 50%;
transform: translatex(-50%);
}
}
http://www.bootply.com/SGYC6BWeBK
Option 3 - Center both brand and links
.navbar .navbar-header,
.navbar-collapse {
float:none;
display:inline-block;
vertical-align: top;
}...
How do you rotate a two dimensional array?
...,[4,5,6],[1,2,3]]
Finally, combining the two will result in the rotation transformation.
The change in placement of [::-1] will reverse lists in different levels of the matrix.
share
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improve th...
What is an optional value in Swift?
...her. It's either nil or it's "Bob". This is not true, the optional doesn't transform into something else. Comparing it to nil is a trick to make easier-to-read code. If an optional equals nil, this just means that the enum is currently set to .none.
Only optionals can be nil
If you try to set a non...
How can we match a^n b^n with Java regex?
...far easier to understand. The recursive solution is pretty much the direct transformation of the grammar into a regex (actually you could just write it in the grammarized form, it would work).
– NikiC
Sep 19 '11 at 16:04
...
What is the optimal algorithm for the game 2048?
...le row or column is a 16-bit quantity, so a table of size 65536 can encode transformations which operate on a single row or column. For example, moves are implemented as 4 lookups into a precomputed "move effect table" which describes how each move affects a single row or column (for example, the "m...
Creating range in JavaScript - strange syntax
... i, arr);
Number.call(arr[i], i, arr);
Number(i, arr);
Which returns the transformation of i, the current index, to a number.
In conclusion,
The expression
Array.apply(null, { length: 5 }).map(Number.call, Number);
Works in two parts:
var arr = Array.apply(null, { length: 5 }); //1
arr.map(N...
What are the benefits of Java's types erasure?
...y true (a tautology). This is because the correspondence is two-way. The transformation between the type/program and the theorem/proof worlds are mechanical, and can in many cases be automated.
Curry-Howard plays nicely into what we'd like to do with specifications for a program.
Are type systems ...