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Code Golf - π day
..., I am using OpenBSD and some supposedly non-portable extensions at this point.
93 chars. This is based on same formula as FORTRAN solution (slightly different results than test cases). Calculates X^2=R^2-Y^2 for every Y
[rdPr1-d0<p]sp1?dsMdd*sRd2%--
[dd*lRr-vddlMr-32rlpxRR42r2*lpxRRAP4*2+lN+sN...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ctor、string或deque，则使用erase-remove习惯用法。
SeqContainer<int> c;
c.erase(remove(c.begin(),c.end(),1963),c.end());
如果容器是list，则使用list::remove。
如果容器是一个标准关联容器，则使用它的erase成员函数。
要删除容器中满足特定条件的...
Why doesn't RecyclerView have onItemClickListener()?
...
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
final String element = mDataset[position];
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onClic...
How do you obtain a Drawable object from a resource id in android package?
...
As of API 22. getDrawable(int id) is deprecated. Use getDrawable(int id, Resources.Theme theme) instead. The method getTheme() should be helpful.
– Isaac Zais
Apr 17 '15 at 18:07
...
Get integer value of the current year in Java
I need to determine the current year in Java as an integer. I could just use java.util.Date() , but it is deprecated.
15 A...
Does hosts file exist on the iPhone? How to change it? [closed]
...'t work. Then i tried to change encoding settings, and got it! You have to convert your host file to ANSI in Notepad++ before you save it. For whom failed to get the host file working; click "Convert to ANSI" under "Encoding" menu.
– trkaplan
Sep 26 '10 at 12:1...
What does a lazy val do?
...val is executed when it is accessed the first time.
scala> val x = { println("x"); 15 }
x
x: Int = 15
scala> lazy val y = { println("y"); 13 }
y: Int = <lazy>
scala> x
res2: Int = 15
scala> y
y
res3: Int = 13
scala> y
res4: Int = 13
In contrast to a method (defined with d...
How do I skip an iteration of a `foreach` loop?
...
You want:
foreach (int number in numbers) // <--- go back to here --------+
{ // |
if (number < 0) // |
{ ...
Difference between API and ABI
... some library function we write code like:
long howManyDecibels = 123L;
int ok = livenMyHills( howManyDecibels);
and we needed to know that there is a method livenMyHills(), which takes a long integer parameter. So as a Programming Interface it's all expressed in source code. The compiler turns...
Unicode Processing in C++
...n 22.4.1.4 "Class template codecvt" - discusses the codecvt class used for converting between character encodings (including UTF-8, UTF-16 and UTF-32). There is more about Unicode support peppered throughout the document, but these seem to be the most critical sections on the subject.
...