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How to get image size (height & width) using JavaScript?
...pt...
const img = new Image();
img.onload = function() {
alert(this.width + 'x' + this.height);
}
img.src = 'http://www.google.com/intl/en_ALL/images/logo.gif';
This can be useful if the image is not a part of the markup.
...
How do you represent a graph in Haskell?
...to additional indirection, as you're suggesting; often by using a map from ids to the actual elements, and having elements contain references to the ids instead of to other elements. The main thing I didn't like about doing that (aside from the obvious inefficiency) is that it felt more fragile, int...
What is the syntax rule for having trailing commas in tuple definitions?
...
That's a simple answer.
a = ("s") is a string
and
a = ("s",) is a tuple with one element.
Python needs an additional comma in case of one element tuple to, differentiate between string and tuple.
For example try this on python console:
a = ("s")
a = a + (1,...
Is there a common Java utility to break a list into batches?
...h, n == fullChunks ? size : (n + 1) * length));
}
public static void main(String[] args) {
List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14);
System.out.println("By 3:");
batches(list, 3).forEach(System.out::println);
System.out.println("B...
Create a dictionary with list comprehension
...er and its corresponding position in english alphabet
>>> import string
>>> dict1 = {value: (int(key) + 1) for key, value in
enumerate(list(string.ascii_lowercase))}
>>> dict1
{'a': 1, 'c': 3, 'b': 2, 'e': 5, 'd': 4, 'g': 7, 'f': 6, 'i': 9, 'h': 8,
'k': 11, 'j': 10, 'm'...
in_array() and multidimensional array
...es $item. Not to mention the potential to unintentionally match part of a string when there is a double quote in the string itself. I would only trust this function in small/simple situations like this question.
– mickmackusa
Mar 3 '17 at 12:53
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What is the purpose of a question mark after a type (for example: int? myVariable)?
...it seems to not be allowed. return value ? value : "isNull"; tells me that string value isnt convertable into bool.
– C4d
Sep 7 '15 at 13:20
...
How to replace spaces in file names using a bash script
... expansion mechanism to replace a pattern within a parameter with supplied string.
The relevant syntax is ${parameter/pattern/string}. See: https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html or http://wiki.bash-hackers.org/syntax/pe .
...
Why doesn't this code simply print letters A to Z?
...atthew: Alphabetize them. 'aa' would come first, thus it's "less than" the string 'z'. The loop terminates at 'zz' because it's alphabetically "greater than" (comes after) 'z'. It's illogical in the sense that you can "increment" something and get a lesser value, but it's logical in an alphabetical ...
Is there a way to access method arguments in Ruby?
...o get it to work, otherwise you get a TypeError: can't convert Symbol into String
– Javid Jamae
Oct 11 '12 at 3:03
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