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Why is there “data” and “newtype” in Haskell? [duplicate]
... Bool
inside the CoolBool was True or False:
helloMe :: CoolBool -> String
helloMe (CoolBool _) = "hello"
Instead of applying this function to a normal CoolBool, let's throw it a curveball and apply it to undefined!
ghci> helloMe undefined
"*** Exception: Prelude.undefined
...
Integrating the ZXing library directly into my Android application
... layout file
ImageView imageView = (ImageView) findViewById(R.id.qrCode);
String qrData = "Data I want to encode in QR code";
int qrCodeDimention = 500;
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(qrData, null,
Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(), qrCodeDimention);
tr...
Capturing “Delete” Keypress with jQuery
... keydown event because the keypress event is intended for real (printable) characters. keydown is handled at a lower level so it will capture all nonprinting keys like delete and enter.
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The most accurate way to check JS object's type?
...ly one proper way to determine the class of an object:
Object.prototype.toString.call(t);
http://bonsaiden.github.com/JavaScript-Garden/#types
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Remove underline from links in TextView - Android
...id stripUnderlines(TextView textView) {
Spannable s = new SpannableString(textView.getText());
URLSpan[] spans = s.getSpans(0, s.length(), URLSpan.class);
for (URLSpan span: spans) {
int start = s.getSpanStart(span);
int end = s.getSpanEnd(span);
...
Running the new Intel emulator for Android
...e Accelerated Execution Manager. Download it with the SDK Manager, it's in Extras. After this, go to the folder
[Android SDK Root]\extras\intel\Hardware_Accelerated_Execution_Manager
then run IntelHaxm.exe and install.
Here the link of the Intel Hardware Accelerated
IntelHaxm.exe for
Microsoft Wi...
Calling the base constructor in C#
...:
public class MyExceptionClass : Exception
{
public MyExceptionClass(string message, string extrainfo) : base(message)
{
//other stuff here
}
}
Note that a constructor is not something that you can call anytime within a method. That's the reason you're getting errors in your ...
General guidelines to avoid memory leaks in C++ [closed]
...e heap internally (note the double negation... :-) ...). For example, std::string implemented with Small String Optimization will have a buffer "on the stack of the class" for small strings (~15 chars), and will use a pointer to a memory in the heap for larger strings... But from the outside, std::s...
Passing data between a fragment and its container activity
...the interface...
public interface OnDataPass {
public void onDataPass(String data);
}
Then, connect the containing class' implementation of the interface to the fragment in the onAttach method, like so:
OnDataPass dataPasser;
@Override
public void onAttach(Context context) {
super.onAtt...
Associating enums with strings in C#
... example for a Logger:
public class LogCategory
{
private LogCategory(string value) { Value = value; }
public string Value { get; set; }
public static LogCategory Trace { get { return new LogCategory("Trace"); } }
public static LogCategory Debug { get { return new LogCategory(...