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Python dict how to create key or append an element to key?
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You can use a defaultdict for this.
from collections import defaultdict
d = defaultdict(list)
d['key'].append('mykey')
This is slightly more efficient than setdefault since you don't end up creating new lists that you don't end up using. Every call to setdefa...
How to Add Stacktrace or debug Option when Building Android Studio Project
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You can use GUI to add these gradle command line flags from
File > Settings > Compiler (Gradle-based Android Project)
For MacOS user, it's here
Android Studio > Preferences > Build, Execution, Deployment > Compiler
like this (add --stacktrace or --debug)
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Reusing output from last command in Bash
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You can save yourself from typing $(your_cmd) by using backticks: `your_cmd` According to the Gnu Bash manual they are functionally identical. Of course this is also subject to the warning raised by @memecs
– user2065875
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ArrayBuffer to base64 encoded string
...yteLength;
for (var i = 0; i < len; i++) {
binary += String.fromCharCode( bytes[ i ] );
}
return window.btoa( binary );
}
but, non-native implementations are faster e.g. https://gist.github.com/958841
see http://jsperf.com/encoding-xhr-image-data/6
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How do I skip an iteration of a `foreach` loop?
... something more complicated depending on exactly what you want, like break from the inner loop, then continue on the outer loop. See here for the documentation on the break keyword. The break C# keyword is similar to the Perl last keyword.
Also, consider taking Dustin's suggestion to just filter out...
Using C++ library in C code
...bar)
{
return realFoo(std::string(bar));
}
Then, you will call foo() from your C module, which will pass the call on to the realFoo() function which is implemented in C++.
If you need to expose a full C++ class with data members and methods, then you may need to do more work than this simple ...
img src SVG changing the styles with CSS
...y can write anything on this platform. MDN: "This feature has been removed from the Web standards. Though some browsers may still support it, it is in the process of being dropped"
– vsync
Sep 15 '18 at 7:05
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Max retries exceeded with URL in requests
...at itunes server refuses your connection (you're sending too many requests from same ip address in short period of time)
Max retries exceeded with url: /in/app/adobe-reader/id469337564?mt=8
error trace is misleading it should be something like "No connection could be made because the target m...
More than 10 lines in a node.js stack error?
... change stackTraceLimit. Also, it affects only what you get in Error.stack from what I can see. Built-in debugger always displays full stack (bt command).
– x-yuri
Nov 17 '17 at 18:32
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Global variables in AngularJS
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From the Angular FAQ: Conversely, don't create a service whose only purpose in life is to store and return bits of data.
– Jakob Stoeck
Feb 21 '13 at 15:52
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