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What is the syntax rule for having trailing commas in tuple definitions?
...is on python console:
a = ("s")
a = a + (1,2,3)
Traceback (most recent call last):
File stdin, line 1, in module
TypeError: cannot concatenate 'str' and 'tuple' objects
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Simple way to repeat a String in java
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Probably obvious, but you can call this method on a string literal too: "abc".repeat(3)
– Boann
Jun 20 '19 at 1:56
add a comment
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Android - Camera preview is sideways
...t as a bug with certain hardware see here but can be overcome by using the call to mCamera.setDisplayOrientation(degrees) available in API 8. So this is how I implement it:
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (isPreviewRunning) {
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grep, but only certain file extensions
...comment, find can optionally bundle arguments, reducing invocations of the called process to a minimum. find . \( -name \*.h -o -name \*.cpp \) -exec grep -H CP_Image {} + This is suggested but not highlighted in @fedorqui's answer below and is a worthwhile improvement. The -H argument to grep he...
Create a dictionary with list comprehension
... at all...
But if you already have iterable(s) of keys and/or values, just call the dict built-in directly:
1) consumed from any iterable yielding pairs of keys/vals
dict(pairs)
2) "zip'ped" from two separate iterables of keys/vals
dict(zip(list_of_keys, list_of_values))
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Upgrade python packages from requirements.txt using pip command
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Very useful tool! I also found another package called pur that upgrades the pinned versions as well
– Gal Avineri
Aug 18 '19 at 20:31
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Convert date to another timezone in JavaScript
...e. Don't do that. Just use the string output from the first toLocalString call.
– Matt Johnson-Pint
Apr 24 '19 at 22:45
4
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Chrome Dev Tools: How to trace network for a link that opens a new tab?
...n the same tab by executing the following code in the console:
[].forEach.call(document.querySelectorAll('a'),
function(link){
if(link.attributes.target) {
link.attributes.target.value = '_self';
}
});
window.open = function(url) {
location.href = url;
};
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Code coverage for Jest
...age to the Jest script. Below are some examples:
I tend to install Jest locally, in which case the command might look like this:
npx jest --coverage
I assume (though haven't confirmed), that this would also work if I installed Jest globally:
jest --coverage
The very sparse docs are here
When ...
VIM + Syntastic: how to disable the checker?
...tic disabled for this buffer'
endfunction
command! SyntasticDisableBuffer call SyntasticDisableBuffer()
Because this doesn't affect other buffers, I can keep using this awesome plugin for any other (partially) compliant files I have open.
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