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Why does Clojure have “keywords” in addition to “symbols”?
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It seems keywords are more useful as keys in hashmaps etc as they don't change once evaluated: (eval (eval ':a)) vs (eval (eval ''a)). Are there other advantages? Performance wise, they are identical?
– kristianlm
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git ahead/behind info between master and branch?
...wo branches and show how many commits each branch is ahead of the other (a more general answer on your question 1):
For local branches:
git rev-list --left-right --count master...test-branch
For remote branches:
git rev-list --left-right --count origin/master...origin/test-branch
This gives outpu...
Android: combining text & image on a Button or ImageButton
...dding="-15sp"
android:text="this is text"></Button>
For more sophisticated arrangement you also can use RelativeLayout (or any other layout) and make it clickable.
Tutorial: Great tutorial that covers both cases: http://izvornikod.com/Blog/tabid/82/EntryId/8/Creating-Android-but...
Making a Sass mixin with optional arguments
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That's good to know but often times it's more clear to indicate what arguments a mixin is expecting, like $top, $left, $blur, etc. Variable arguments, like you've shown, are great for ultimate flexibility, though.
– Joshua Pinter
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What's the difference between libev and libevent?
... programs to use both the libevent approach and the libev approach. Furthermore, libevent would sometimes expire timers early, depending on the backend. The former is an API issue, the latter is fixable (and might have been fixed since - I didn't check).
As for IOCP support - I don't think it can b...
html select option separator
... Why does the optgroup solution sucks? It looks semantically more appropriate and it doesn't seem to have compatibility issues.
– db0
Feb 7 '15 at 15:47
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How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
...ty, it will output some form of “true”. The usual form of the above is more like: echo $address['street2'] ?? 'Empty'; however as mentioned, it is the “null coalescing operator” so it only tests for null and not empty. This is because ?? Is effectively a shorthand for isset().
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a href link for entire div in HTML/CSS
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which is semantically correct and works as expected but is not a div any more.
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How do I get a list of all the duplicate items using pandas in python?
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How to use JUnit to test asynchronous processes
... accepted answer. Testing goes beyond unit testing. The OP calls it out as more of an Integration Test than a Unit Test.
– Jeremiah Adams
Jun 19 '18 at 16:46
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