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How do you find the sum of all the numbers in an array in Java?
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271
In java-8 you can use streams:
int[] a = {10,20,30,40,50};
int sum = IntStream.of(a).sum();
Sys...
MongoDB - Update objects in a document's array (nested updating)
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For question #1, let's break it into two parts. First, increment any document that has "items.item_name" equal to "my_item_two". For this you'll have to use the positional "$" operator. Something like:
db.bar.update( {user_id : 123456...
How to shuffle a std::vector?
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From C++11 onwards, you should prefer:
#include <algorithm>
#include <random>
auto rng = std::default_random_engine {};
std::shuffle(std::begin(cards_), std::end(cards_), rng);
Live example on Coliru
Make sure to reu...
What is the difference between .text, .value, and .value2?
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241
.Text gives you a string representing what is displayed on the screen for the cell. Using .Text ...
Tools to selectively Copy HTML+CSS+JS From A Specific Element of DOM [closed]
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16 Answers
16
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How do I find a specific table in my EDMX model quickly?
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179
Click in an open area of the designer:
Go to the Properties tab:
In the dropdown box at...
Rebasing a Git merge commit
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135
There are two options here.
One is to do an interactive rebase and edit the merge commit, redo...
Why does find -exec mv {} ./target/ + not work?
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185
The manual page (or the online GNU manual) pretty much explains everything.
find -exec comman...
What's the “big idea” behind compojure routes?
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212
Compojure explained (to some degree)
NB. I am working with Compojure 0.4.1 (here's the 0.4.1 r...
How to name variables on the fly?
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118
Use assign:
assign(paste("orca", i, sep = ""), list_name[[i]])
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