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How do I add a simple onClick event handler to a canvas element?
...t, and then pushes one shape (called an element in my code) to an elements array. You could add as many as you wish here.
The purpose of creating an array of objects is so we can query their properties later. After all the elements have been pushed onto the array, we loop through and render each on...
How does numpy.histogram() work?
...rrence (the 2). These results are in the first item in the returned tuple: array([0, 2, 1]).
Since the bins here are of equal width, you can use the number of occurrences for the height of each bar. When drawn, you would have:
a bar of height 0 for range/bin [0,1] on the X-axis,
a bar of height 2...
Getting the filenames of all files in a folder [duplicate]
...ngth > 0) { /** The oldest file comes first **/ Arrays.sort(fileList, LastModifiedFileComparator.LASTMODIFIED_COMPARATOR); } //filesList now contains all the JPG/jpg files in sorted order
– Dilip Muthukurussimana
May 27 '1...
how to compare two elements in jquery [duplicate]
...
You could compare DOM elements. Remember that jQuery selectors return arrays which will never be equal in the sense of reference equality.
Assuming:
<div id="a" class="a"></div>
this:
$('div.a')[0] == $('div#a')[0]
returns true.
...
What are the differences between Generics in C# and Java… and Templates in C++? [closed]
...1.1 code to C# 2.0
Java Generics allow you to declare something like this.
ArrayList<Person> foo = new ArrayList<Person>();
On the surface it looks the same, and it sort-of is. The compiler will also prevent you from putting things that aren't Person into the list.
The difference is wha...
GCC compile error with >2 GB of code
...of the string "s.ds0" it will produce offsetof(ProcessVars, ds0)
create an array of such offsets
write an evaluator which accepts the array above and the base addresses of the structure pointers and produces an result
The array+evaluator will represent the same logic as one of your functions, but...
How to find all occurrences of an element in a list?
...umpy really shines for this sort of thing:
import numpy as np
values = np.array([1,2,3,1,2,4,5,6,3,2,1])
searchval = 3
ii = np.where(values == searchval)[0]
returns:
ii ==>array([2, 8])
This can be significantly faster for lists (arrays) with a large number of elements vs some of the other ...
How to add to an existing hash in Ruby
... { }
hash[:a] = 'a'
hash[:a]
# => 'a'
Here, like [ ] creates an empty array, { } will create a empty hash.
Arrays have zero or more elements in a specific order, where elements may be duplicated. Hashes have zero or more elements organized by key, where keys may not be duplicated but the value...
Does Java casting introduce overhead? Why?
...
For example, suppose we have an array of Object[], where each element might have a different type. But we always know for sure that, say, element 0 is a Double, element 1 is a String. (I know this is a wrong design, but let's just assume I had to do this.)
...
What does int argc, char *argv[] mean?
... virtually all implementations will prepend the name of the program to the array.
The variables are named argc (argument count) and argv (argument vector) by convention, but they can be given any valid identifier: int main(int num_args, char** arg_strings) is equally valid.
They can also be omitte...