Python for-loop without index and item [duplicate]
You can replace i with _ to make it an ‘invisible’ variable. See related: What is the purpose of the single underscore “_” variable in Python?.
for-loop
How to skip to next in javascript in a for-in with a while inside?
Don’t iterate over arrays using for…in. That syntax is for iterating over the properties of an object, which isn’t what you’re after. As for your actual question, you can use the continue: var y = [1, 2, 3, 4]; for (var i = 0; i < y.length; i++) { if (y[i] == 2) { continue; … Read more
Build Dictionary in Python Loop – List and Dictionary Comprehensions
The short form is as follows (called dict comprehension, as analogy to the list comprehension, set comprehension etc.): x = { row.SITE_NAME : row.LOOKUP_TABLE for row in cursor } so in general given some _container with some kind of elements and a function _value which for a given element returns the value that you want … Read more
What is the most efficient loop in c#
The answer the majority of the time is it does not matter. The number of items in the loop (even what one might consider a “large” number of items, say in the thousands) isn’t going to have an impact on the code. Of course, if you identify this as a bottleneck in your situation, by … Read more
Why do I get an IndexError (or TypeError, or just wrong results) from “ar[i]” inside “for i in ar”?
When looping over a list, the for variable (in this example i) represents the current element of the list. For example, given ar = [1, 5, 10], i will have the successive values 1, 5 and 10 each time through the loop. Since the length of the list is 3, the maximum permitted index is … Read more
Accessing elements of JSON object without knowing the key names
You can use the for..in construct to iterate through arbitrary properties of your object: for (var key in obj.d) { console.log(“Key: ” + key); console.log(“Value: ” + obj.d[key]); }
For loop – like Python range function
Java 8 (2014) has added IntStream (similar to apache commons IntRange), so you don’t need external lib now. import java.util.stream.IntStream; IntStream.range(0, 3).forEachOrdered(n -> { System.out.println(n); }); forEach can be used in place of forEachOrdered too if order is not important. IntStream.range(0, 3).parallel() can be used for loops to run in parallel
Can I yield from an inner function?
No, you can’t use yield inside of the inner function. But in your case you don’t need it. You can always use for-of loop instead of forEach method. It will look much prettier, and you can use continue, break, yield inside it: var trivialGenerator = function *(array) { for (var item of array) { // … Read more