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Find object by id in an array of JavaScript objects
I've got an array:
35 Answers
35
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What's the 'Ruby way' to iterate over two arrays at once
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'.each' can unfold array elements? I wonder how much more of Ruby I don't know :/
– Nikita Rybak
Aug 26 '10 at 22:35
5
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C compile error: “Variable-sized object may not be initialized”
...ming that you are using a C99 compiler (with support for dynamically sized arrays). The problem in your code is that at the time when the compilers sees your variable declaration it cannot know how many elements there are in the array (I am also assuming here, from the compiler error that length is ...
Calculate the center point of multiple latitude/longitude coordinate pairs
...ave another dev some time.
/**
* Get a center latitude,longitude from an array of like geopoints
*
* @param array data 2 dimensional array of latitudes and longitudes
* For Example:
* $data = array
* (
* 0 = > array(45.849382, 76.322333),
* 1 = > array(45.843543, 75.324143),
* ...
How can I remove an element from a list, with lodash?
...ect.subTopicId === stToDelete;
});
Alternatively, you can create a new array by filtering the old one with _.filter and assign it to the same object, like this
obj.subTopics = _.filter(obj.subTopics, function(currentObject) {
return currentObject.subTopicId !== stToDelete;
});
Or
obj.sub...
How do I iterate through each element in an n-dimensional matrix in MATLAB?
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You can use linear indexing to access each element.
for idx = 1:numel(array)
element = array(idx)
....
end
This is useful if you don't need to know what i,j,k, you are at. However, if you don't need to know what index you are at, you are probably better off using arrayfun()
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How can I reverse a NSArray in Objective-C?
I need to reverse my NSArray .
18 Answers
18
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Why declare a struct that only contains an array in C?
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It allows you to pass the array to a function by value, or get it returned by value from a function.
Structs can be passed by value, unlike arrays which decay to a pointer in these contexts.
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Getting a random value from a JavaScript array
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It is a simple one-liner
const randomElement = array[Math.floor(Math.random() * array.length)];
Example
const months = ["January", "February", "March", "April", "May", "June", "July"];
const random = Math.floor(Math.random() * months.length);
console.log(random, mon...
How to return an array from JNI to Java?
...estion. In this case, the JNI function in the example creates a number of arrays. The outer array is comprised of an 'Object' array creating with the JNI function NewObjectArray(). From the perspective of JNI, that's all a two dimensional array is, an object array containing a number of other inn...