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Class type check in TypeScript
...ode inside that block is safe to use as the type you think it is.
Example from the TypeScript docs:
function isFish(pet: Fish | Bird): pet is Fish {
return (<Fish>pet).swim !== undefined;
}
// Both calls to 'swim' and 'fly' are now okay.
if (isFish(pet)) {
pet.swim();
}
else {
pet.fl...
Gesture recognizer and button actions
...dd a condition that will return NO if the touch is in the button.
This is from apple SimpleGestureRecognizers example.
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
// Disallow recognition of tap gestures in the segmented control.
...
How to change the value of attribute in appSettings section with Web.config transformation
...
If you want to make transformation your app setting from web config file to web.Release.config,you have to do the following steps.
Let your web.config app setting file is this-
<appSettings>
<add key ="K1" value="Debendra Dash"/>
</appSettings>
Now ...
Looking for a clear definition of what a “tokenizer”, “parser” and...
... other token is an equality operator.
A parser takes the stream of tokens from the lexer and turns it into an abstract syntax tree representing the (usually) program represented by the original text.
Last I checked, the best book on the subject was "Compilers: Principles, Techniques, and Tools" us...
Jasmine.js comparing arrays
...ect(mockArr ).toEqual([1, 2, 3]);
});
But if the array that is returned from some function has more than 1 elements and all are zero then verify by using
expect(mockArray[0]).toBe(0);
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Measuring text width to be drawn on Canvas ( Android )
...this is very subjective and dependent on the font.
For example the width from measure text bounds may actually look too small:
However when adding an additional text the bounds for one letter looks normal:
Images taken from Android Developers Guide to Custom Canvas Drawing
...
Ignoring SSL certificate in Apache HttpClient 4.3
...self signed certificates so you don't have to acquire a proper certificate from a certification authority. You can easily create a self-signed certificate with the correct host name, so do that instead of adding the SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER flag.
...
What is the difference between Numpy's array() and asarray() functions?
... with the specified requirements string.
copy: The input is always copied.
fromiter: The input is treated as an iterable (so, e.g., you can construct an array from an iterator's elements, instead of an object array with the iterator); always copied.
There are also convenience functions, like asarr...
Setting HTTP headers
...ow CORS works) is that the HTTP Method of a preflight request is different from the HTTP Method of the actual request. To initiate CORS, the browser sends a preflight request with HTTP Method OPTIONS, which you have to handle explicitly in your router, and then, if it receives the appropriate respon...
What's the difference between process.cwd() vs __dirname?
...
process.cwd() returns the current working directory,
i.e. the directory from which you invoked the node command.
__dirname returns the directory name of the directory containing the JavaScript source code file
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