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String length in bytes in JavaScript
In my JavaScript code I need to compose a message to server in this format:
13 Answers
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throwing exceptions out of a destructor
Most people say never throw an exception out of a destructor - doing so results in undefined behavior. Stroustrup makes the point that "the vector destructor explicitly invokes the destructor for every element. This implies that if an element destructor throws, the vector destruction fails... The...
How to get the current date and time
...guments; this will assign the current date and time to the new object.
import java.util.Date;
Date d = new Date();
In the words of the Javadocs for the zero-argument constructor:
Allocates a Date object and initializes it so that it represents the time at which it was allocated, measured to ...
How to close current tab in a browser window?
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Note: the current tab is implied. This is equivalent:
window.close();
or you can specify a different window.
So:
function close_window() {
if (confirm("Close Window?")) {
close();
}
}
with HTML:
<a href="javascript:close_window();">close</a>
or:
<a href="#" onclic...
How to print the contents of RDD?
... view the content of a RDD, one way is to use collect():
myRDD.collect().foreach(println)
That's not a good idea, though, when the RDD has billions of lines. Use take() to take just a few to print out:
myRDD.take(n).foreach(println)
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Is there a (repeat-last-command) in Emacs?
Frequently, I've dug into apropos and docs looking for something like the following only to give up to get back to the task at hand:
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How do I check (at runtime) if one class is a subclass of another?
... edited Oct 8 '18 at 18:32
Trevor Boyd Smith
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answered Feb 6 '11 at 11:31
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Check if multiple strings exist in another string
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You can use any:
a_string = "A string is more than its parts!"
matches = ["more", "wholesome", "milk"]
if any(x in a_string for x in matches):
Similarly to check if all the strings from the list are found, use all instead of any.
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How do I run Python code from Sublime Text 2?
...stem -> (choose) Python then:
To Run:
Tools -> Build
-or-
Ctrl + B
CMD + B (OSX)
This would start your file in the console which should be at the bottom of the editor.
To Stop:
Ctrl + Break or Tools -> Cancel Build
Fn + C (OSX)
You can find...
TypeScript function overloading
... So, TypeScript restricts us from creating such functions.
TypeScript supports overloading based on number of parameters, but the steps to be followed are a bit different if we compare to OO languages. In answer to another SO question, someone explained it with a nice example: Method overloading?.
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