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Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?
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Tuples are great if you control both creating and using them - you can maintain context, which is essential to understanding them.
On a public API, however, they are less effective. The consumer (not you) has to either guess or look up documentation, especially for things like Tuple<int, int&g...
Number of occurrences of a character in a string [duplicate]
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You could do this:
int count = test.Split('&').Length - 1;
Or with LINQ:
test.Count(x => x == '&');
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Reverse a string in Java
...ead of StringBuilder — they have the same API. Thanks commentators for pointing out that StringBuilder is preferred nowadays when there is no concurrency concern.
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how to get android screen size programmatically, once and for all?
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Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
Now you can measure your screen size in pixel which is a better measurement unit than centimeter because all the buttons ,textviews etc...
What does “|=” mean? (pipe equal operator)
...t-wise operator is used because, as is frequent, those constants enable an int to carry flags.
If you look at those constants, you'll see that they're in powers of two :
public static final int DEFAULT_SOUND = 1;
public static final int DEFAULT_VIBRATE = 2; // is the same than 1<<1 or 10 in ...
使用CSplitterWnd实现拆分窗口（多视图显示） - C/C++ - 清泛网 - 专注C/C++及内核技术
...视图的种类。
关键函数
BOOL CreateStatic( CWnd* pParentWnd, int nRows, int nCols, DWORD dwStyle = WS_CHILD | WS_VISIBLE, UINT nID = AFX_IDW_PANE_FIRST );
函数有5个参数，意义如下:
● pParentWnd:切分窗口的父窗口指针
● nRows:水平方向分隔窗...
How do I center a window onscreen in C#?
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A single line:
this.Location = new Point((Screen.PrimaryScreen.WorkingArea.Width - this.Width) / 2,
(Screen.PrimaryScreen.WorkingArea.Height - this.Height) / 2);
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Reading string from input with space character? [duplicate]
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%c represents a character just like %d represents a integer, %*c all characters. So totally it means read all characters until you encounter a new line character @NathanProgrammer
– Nobody
Jul 5 '17 at 15:33
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MySQL SELECT WHERE datetime matches day (and not necessarily time)
...ults when using BETWEEN with date or time values, use CAST() to explicitly convert the values to the desired data type. Examples: If you compare a DATETIME to two DATE values, convert the DATE values to DATETIME values. If you use a string constant such as '2001-1-1' in a comparison to a DATE, cast ...
Android Use Done button on Keyboard to click button
...er() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if ((event != null && (event.getKeyCode() == KeyEvent.KEYCODE_ENTER)) || (actionId == EditorInfo.IME_ACTION_DONE)) {
Log.i(TAG,"Enter pressed");
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