iteration Questions
4
Solved
Is there any "pythonic" way to do this? I am pretty sure my method is not good:
sample = "This is a string"
n = 3 # I want to iterate over every third element
i = 1
for x in sam...
6
Consider something like...
for (int i = 0; i < test.size(); ++i) {
test[i].foo();
test[i].bar();
}
Now consider..
for (int i = 0; i < test.size(); ++i) {
test[i].foo();
}
for (int i = ...
Ambroseambrosi asked 24/10, 2010 at 2:50
8
Solved
On Python, range(3) will return [0,1,2]. Is there an equivalent for multidimensional ranges?
range((3,2)) # [(0,0),(0,1),(1,0),(1,1),(2,0),(2,1)]
So, for example, looping though the tiles of a r...
10
I have a question on my homework for class and I need to know how to return nth number of Fibonacci sequence using iteration (no recursion allowed).
I need some tips on how to do this so I can bet...
11
In java if I am looping over the keySet() of a HashMap, how do I (inside the loop), get the numerical index of that key?
Basically, as I loop through the map, I want to be able to get 0,1,2...I fi...
3
Solved
I would like to use some iteration control flow to simplify the following LaTeX code.
\begin{sidewaystable}
\caption{A glance of images}
\centering
\begin{tabular}{| c ||c| c| c |c| c|| c |c| ...
46
Solved
If I have an object implementing the Map interface in Java and I wish to iterate over every pair contained within it, what is the most efficient way of going through the map?
Will the ordering of ...
Pesek asked 5/9, 2008 at 21:12
4
Solved
I need to know when a Queue is closed and wont have more items so I can end the iteration.
I did it by putting a sentinel in the queue:
from Queue import Queue
class IterableQueue(Queue):
_se...
28
Solved
I have the following code to do this, but how can I do it better? Right now I think it's better than nested loops, but it starts to get Perl-one-linerish when you have a generator in a list compreh...
Carchemish asked 29/6, 2009 at 20:16
16
Solved
In my script I need to perform a set of actions through range of dates, given a start and end date.
Please provide me guidance to achieve this using Java.
for ( currentDate = starDate; currentDate...
5
10
Solved
In Java, what would the fastest way to iterate over all the chars in a String, this:
String str = "a really, really long string";
for (int i = 0, n = str.length(); i < n; i++) {
char c = str.c...
Emelia asked 17/1, 2012 at 12:2
2
Solved
I have a code base with mixed Java and Groovy code. For iteration in the Groovy code, we tend to use closures:
String[] strings = ["First", "Second", "Third"]
strings.each { string ->
println ...
Hilarius asked 11/3, 2013 at 9:13
2
Solved
in SICP Section 1.2.1 The author giving such a code example below to show how to using iterative process to solve the factorial problem:
(define (factorial n)
(fact-iter 1 1 n))
(define (fact-ite...
6
Solved
How can I iterate through items of a LinkedHashSet from the last item to the first one?
Shuttle asked 24/5, 2012 at 16:51
16
Solved
In the question Iterate a list as pair (current, next) in Python, the OP is interested in iterating a Python list as a series of current, next pairs. I have the same problem, but I'd like to do it ...
Charliecharline asked 12/8, 2015 at 18:55
9
Solved
I have noticed very poor performance when using iterrows from pandas.
Is it specific to iterrows and should this function be avoided for data of a certain size (I'm working with 2-3 million rows)?
...
Silence asked 21/7, 2014 at 17:19
6
Solved
The past few weeks I have been learning about iterators. I still do not understand the main difference between iterating through a link list and traversing through one. I know that traversing means...
Esdraelon asked 1/5, 2013 at 22:24
10
Solved
I just had a quick question regarding loops in Ruby. Is there a difference between these two ways of iterating through a collection?
# way 1
@collection.each do |item|
# do whatever
end
# way 2
...
19
Solved
I want to cycle through the objects contained in an array and change the properties of each one. If I do this:
for (var j = 0; j < myArray.length; j++){
console.log(myArray[j]);
}
The conso...
Stormi asked 18/5, 2013 at 16:50
6
Solved
I'm looking for ways to interrupt iteration of an infinite iterator. I found that try_fold accomplishes my objective. However, that requires doing the awkward thing of returning an Err on the succe...
1
I am evaluating successive terms of the look and say sequence (more about it here: https://en.wikipedia.org/wiki/Look-and-say_sequence).
I used two approaches and timed them both. In the first app...
Pastose asked 4/7, 2018 at 23:13
8
Solved
I have some C++ code, in which the following enum is declared:
enum Some
{
Some_Alpha = 0,
Some_Beta,
Some_Gamma,
Some_Total
};
int array[Some_Total];
The values of Alpha, Beta and Gamma ar...
8
Solved
I want to replace the values (formated as strings) with the same values as integers, whenever the key is 'current_values'.
d = {'id': '10', 'datastreams': [{'current_value': '5'}, {'current_value'...
Negotiable asked 16/4, 2019 at 9:21
3
In my main coroutine, I am removing or adding entries from a table depending on user operations. In the background, I'd like to iterate over the entries in the table. I don't mind particularly if I...
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