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java: Class.isInstance vs Class.isAssignableFrom
...e code to demonstrate:
public class NewMain
{
public static void main(String[] args)
{
NewMain nm = new NewMain();
nm.doit();
}
class A { }
class B extends A { }
public void doit()
{
A myA = new A();
B myB = new B();
A[] aArr = ...
Why sizeof int is wrong, while sizeof(int) is right?
... be ambiguous if C++ didnt specify that the new operator takes the longest string that could possibly be a type. So In C++ they could have made the same with sizeof, I guess. But in C++ you can say sizeof int() which then would have been ambiguous (type or value initialized int?).
...
WPF Data Binding and Validation Rules Best Practices
...an use INotifyErrorInfo which allows you to return objects instead of just strings.
– Peter
Dec 19 '13 at 8:44
add a comment
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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
... // can't read from the stream until you call end()
hash = hmac.read().toString('hex'); // read out hmac digest
console.log("Method 1: ", hash);
// Method 2 - Using update and digest:
hmac = crypto.createHmac(algorithm, secret);
hmac.update(text);
hash = hmac.digest('hex');
console.log("Method...
How to send a JSON object using html form data
...
Get complete form data as array and json stringify it.
var formData = JSON.stringify($("#myForm").serializeArray());
You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If this data is passed as json string vi...
“Debug only” code that should run only when “turned on”
...[ConditionalAttribute("DEBUG")]
public static void MyLovelyDebugInfoMethod(string message)
{
Console.WriteLine("This message was brought to you by your debugger : ");
Console.WriteLine(message);
}
any call you make to this method inside your own code will only be executed in debug mode. If...
Set the location in iPhone Simulator
... where is debug menu in IOS simulator?
– Lucky_girl
Feb 6 '18 at 14:07
1
this works but it...
Custom toast on Android: a simple example
...e Java method (just pass toast message to this method):
public void toast(String message)
{
Toast toast = new Toast(context);
View view = LayoutInflater.from(context).inflate(R.layout.image_custom, null);
TextView textView = (TextView) view.findViewById(R.id.custom_toast_text);
text...
Is there a CSS selector by class prefix?
...
It's not doable with CSS2.1, but it is possible with CSS3 attribute substring-matching selectors (which are supported in IE7+):
div[class^="status-"], div[class*=" status-"]
Notice the space character in the second attribute selector. This picks up div elements whose class attribute meets eit...
How can I decompress a gzip stream with zlib?
...compatible with gzip module:
>>> import gzip
>>> import StringIO
>>> fio = StringIO.StringIO(gzip_data)
>>> f = gzip.GzipFile(fileobj=fio)
>>> f.read()
'test'
>>> f.close()
automatic header detection (zlib or gzip)
adding 32 to windowBits wil...