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Why doesn't println! work in Rust unit tests?
...in.rs; ./main
running 1 test
test test ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured
% ./main --nocapture
running 1 test
Hidden output
test test ... ok
test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured
% cargo test -- --nocapture
running 1 test
Hidden output
test ...
How to determine if a number is odd in JavaScript
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360
Use the below code:
function isOdd(num) { return num % 2;}
console.log("1 is " + isOdd(1))...
How to add an empty column to a dataframe?
...t; df = pd.DataFrame({"A": [1,2,3], "B": [2,3,4]})
>>> df
A B
0 1 2
1 2 3
2 3 4
>>> df["C"] = ""
>>> df["D"] = np.nan
>>> df
A B C D
0 1 2 NaN
1 2 3 NaN
2 3 4 NaN
...
How to use regex with find command?
I have some images named with generated uuid1 string. For example 81397018-b84a-11e0-9d2a-001b77dc0bed.jpg. I want to find out all these images using "find" command:
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Replace only some groups with Regex
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answered May 15 '11 at 0:13
bluepnumebluepnume
13.1k88 gold badges3232 silver badges4444 bronze badges
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How to Copy Contents of One Canvas to Another Canvas Locally
...tion passing it the source canvas directly
destCtx.drawImage(sourceCanvas, 0, 0);
Way faster than using an ImageData object or Image element.
Note that sourceCanvas can be a HTMLImageElement, HTMLVideoElement, or a HTMLCanvasElement. As mentioned by Dave in a comment below this answer, you cannot...
“Comparison method violates its general contract!”
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edited May 30 '14 at 6:34
rkg
15533 silver badges1313 bronze badges
answered Nov 30 '11 at...
Python, remove all non-alphabet chars from string
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answered Mar 20 '14 at 0:36
limasxgoesto0limasxgoesto0
3,47344 gold badges2424 silver badges3636 bronze badges
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Android gradle: buildtoolsVersion vs compileSdkVersion
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200
compileSdkVersion is the API version of Android that you compile against.
buildToolsVersion is...
How to avoid scientific notation for large numbers in JavaScript?
...tific notation if the number is >= 1e21 and has a maximum precision of 20. Other than that, you can roll your own, but it will be messy.
function toFixed(x) {
if (Math.abs(x) < 1.0) {
var e = parseInt(x.toString().split('e-')[1]);
if (e) {
x *= Math.pow(10,e-1);
x = ...