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Is it possible to implement dynamic getters/setters in JavaScript?
...r objects. Here's a simple example that turns any property values that are strings to all caps on retrieval:
"use strict";
if (typeof Proxy == "undefined") {
throw new Error("This browser doesn't support Proxy");
}
let original = {
"foo": "bar"
};
let proxy = new Proxy(original, ...
How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
...
Get list of all routes defined in the Flask app
... as ?spam="eggs") are listed? Perhaps this info can be extracted from a docstring of an implementing method.
– Leonid
Aug 10 '14 at 4:44
2
...
Serializing class instance to JSON
I am trying to create a JSON string representation of a class instance and having difficulty. Let's say the class is built like this:
...
Do I have to guard against SQL injection if I used a dropdown?
...less, you must use Prepared Statements (recommended) or mysqli_real_escape_string. Also properly escape the values when outputting them (e.g. use htmlspecialchars() in a HTML document).
– ComFreek
Mar 20 '14 at 18:12
...
What is the meaning of single and double underscore before an object name?
...n is meant to call, not you. Let's take a look:
>>> name = "test string"
>>> name.__len__()
11
>>> len(name)
11
>>> number = 10
>>> number.__add__(40)
50
>>> number + 50
60
There is always an operator or native function which calls these magi...
TypeScript function overloading
...one implementation with multiple signatures.
class Foo {
myMethod(a: string);
myMethod(a: number);
myMethod(a: number, b: string);
myMethod(a: any, b?: string) {
alert(a.toString());
}
}
Only the three overloads are recognized by TypeScript as possible signatures for ...
How to parse float with two decimal places in javascript?
...
You can use toFixed() to do that
var twoPlacedFloat = parseFloat(yourString).toFixed(2)
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What does `:_*` (colon underscore star) do in Scala?
...plats"1 the sequence.
Look at the constructor signature
new Elem(prefix: String, label: String, attributes: MetaData, scope: NamespaceBinding,
child: Node*)
which is called as
new Elem(prefix, label, attributes, scope,
child1, child2, ... childN)
but here there is only a seq...
How to test if a string is basically an integer in quotes using Ruby
...regular expressions. Here is the function with @janm's suggestions.
class String
def is_i?
!!(self =~ /\A[-+]?[0-9]+\z/)
end
end
An edited version according to comment from @wich:
class String
def is_i?
/\A[-+]?\d+\z/ === self
end
end
In case you only need to chec...