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Shorthand way for assigning a single field in a record, while copying the rest of the fields?
...good job for lenses:
data Foo = Foo { a :: Int, b :: Int , c :: String }
test = Foo 1 2 "Hello"
Then:
setL c "Goodbye" test
would update field 'c' of 'test' to your string.
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What's the fastest way to loop through an array in JavaScript?
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After performing this test with most modern browsers:
https://jsben.ch/wY5fo
Currently, the fastest form of loop (and in my opinion the most syntactically obvious).
A standard for-loop with length caching
var i = 0, len = myArray.length;
w...
Swapping two variable value without using third variable
...rent
*x ^= *y;
*y ^= *x;
*x ^= *y;
}
}
Why the test?
The test is to ensure that x and y have different memory locations (rather than different values). This is because (p xor p) = 0 and if both x and y share the same memory location, when one is set to 0, both are set ...
Why is arr = [] faster than arr = new Array?
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Just made a test case. new Array(n) is faster in cases where you know the size of the array ahead of time jsperf.com/square-braces-vs-new-array
– Y. Yoshii
Dec 10 '19 at 3:59
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Maven2 property that indicates the parent directory
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Don't put "test" for the phase. Caused me a variety of problems. Works great as shown above.
– ElectronicBlacksmith
Jan 22 '18 at 17:44
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How can I search sub-folders using glob.glob module?
...ase the fnmatch.filter() may be overkill, you could also use a .endswith() test:
import os
path = 'C:/Users/sam/Desktop/file1'
configfiles = [os.path.join(dirpath, f)
for dirpath, dirnames, files in os.walk(path)
for f in files if f.endswith('.txt')]
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TextView.setTextSize behaves abnormally - How to set text size of textview dynamically for different
...swer, as also ran into a bit of confusion. You should be able to drop this test into any @RunWith(AndroidJUnit4.class) test you have in your project (you'll also need to add the dimens to your dimens.xml).
Note: All these tests pass
@Test public void testScaledFontSizes() {
if (Build.VERSION.SDK...
How to detect if a variable is an array
...sOwnProperty && ; also, is this still an issue with IE7? my simple tests via task manager suggest that the memory got reclaimed after minimizing the browser...
– Christoph
Jun 29 '09 at 18:32
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Download a single folder or directory from a GitHub repo
...an example.
Navigate to the folder you want to download. Let's download /test from master branch.
Modify the URL for subversion. Replace tree/master with trunk.
https://github.com/lodash/lodash/tree/master/test ➜
https://github.com/lodash/lodash/trunk/test
Download the folder. Go to the comma...
window.close and self.close do not close the window in Chrome
... while ago, to stop various malicious exploits and annoyances.
From the latest working spec for window.close():
The close() method on Window objects should, if all the following conditions are met, close the browsing context A:
The corresponding browsing context A is script-closable.
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