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How do I check in JavaScript if a value exists at a certain array index?
... This would also do stuff if the array value exists but is 0, null, "", etc.
– thomasrutter
Apr 20 '10 at 3:51
Thom...
What is the fastest way to send 100,000 HTTP requests in Python?
...and I found this to work the best for me using python3.6.
I was able to fetch about ~150 unique domains per second running on AWS.
import pandas as pd
import concurrent.futures
import requests
import time
out = []
CONNECTIONS = 100
TIMEOUT = 5
tlds = open('../data/sample_1k.txt').read().splitli...
UTF-8 all the way through
...ument. However, if you're targeting older versions of HTML (XHTML, HTML4, etc.), these points may still be useful:
For HTML before HTML5 only: you want all data sent to you by browsers to be in UTF-8. Unfortunately, if you go by the only way to reliably do this is add the accept-charset attribute...
Where does the .gitignore file belong?
...temporary file” naming pattern, your editor’s backup/temporary files, etc.). Accordingly, avoid putting “personal patterns” in tracked .gitignore file(s).
– Chris Johnsen
Apr 19 '11 at 4:01
...
Making custom right-click context menus for my web-app
...
Note: you might see some small bugs (dropdown far from the cursor, etc), please make sure that it works in the jsfiddle, as that's more similar to your webpage than StackSnippets might be.
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What is the function __construct used for?
...after it has been created, and is a good place to put initialisation code, etc.
class Person {
public function __construct() {
// Code called for each new Person we create
}
}
$person = new Person();
A constructor can accept parameters in the normal manner, which are passed whe...
Referring to the null object in Python
...nd is used to control and test special conditions (e.g. boundaries, state, etc.). Such a value is called a sentinel and it can be used the way None is used as a signal. It's trivial to create a sentinel in Python.
undefined = object()
The undefined object above is unique and doesn't do much of anyt...
Combining two expressions (Expression)
...
Well, you can use Expression.AndAlso / OrElse etc to combine logical expressions, but the problem is the parameters; are you working with the same ParameterExpression in expr1 and expr2? If so, it is easier:
var body = Expression.AndAlso(expr1.Body, expr2.Body);
var lam...
C++ project organisation (with gtest, cmake and doxygen)
...nd TEST_F. Value- or Type-parameterised tests using TEST_P, TYPED_TEST_P, etc. aren't handled at all.
The problem doesn't have an easy solution that I know of. The most robust way to get a list of gtest cases is to execute the test exe with the flag --gtest_list_tests. However, this can only be ...
Good examples of Not a Functor/Functor/Applicative/Monad?
...u've destroyed its value. This is why its not an instance of Enum, Monoid, etc. If you already have one, I'm happy to let you mash them together (giving you a Semigroup) but mempty, but I give no tools for explicitly constructing a value of type Void in void. You have to load the gun and point it at...