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Pandas index column title or name
...erstand why this is not allowed or implemented?
– denfromufa
Apr 1 '16 at 14:42
1
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Convert Pixels to Points
...ls per inch, not points per inch. Perhaps that's where the confusion comes from? Points per inch are always 72; thanks for the link Xetius.
– Mark Ransom
Jul 3 '09 at 15:59
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How to sort a list/tuple of lists/tuples by the element at a given index?
...is faster and simpler: key=itemgetter(1) and at the beginning of the file: from operator import itemgetter
– Joschua
Mar 13 '13 at 20:08
3
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OAuth 2.0: Benefits and use cases — why?
...re. Google is using a 5 minute expiration on their OAuth 2 APIs.
So aside from the refresh tokens, OAuth 2 simplifies all the communications between the client, server, and content provider. And the refresh tokens only exist to provide security when content is being accessed unencrypted.
Two-legge...
How to supply value to an annotation from a Constant java
I am thinking this may not be possible in Java because annotation and its parameters are resolved at compile time. I have an interface as follows,
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How to watch for array changes?
...y1:
Object.defineProperty(myArray, "push", {
enumerable: false, // hide from for...in
configurable: false, // prevent further meddling...
writable: false, // see above ^
value: function () {
for (var i = 0, n = this.length, l = arguments.length; i < l; i++, n++) {
Rai...
Where to get “UTF-8” string literal in Java?
... reasons. In such cases, I keep a Charset object around, typically derived from StandardCharsets, and use name() if needed.
– Magnilex
Mar 2 '15 at 14:32
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When should I use the new keyword in C++?
...s) you shouldn't use new.
If you'd like to return a pointer to your object from a function, you must use new
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Fragment Inside Fragment
...witching to getChildFragmentManager() and removing setRetainInstance(true) from the inner fragment (pity) fixed it. Thanks for saving my bacon again, @CommonsWare.
– Felix
Sep 19 '13 at 16:42
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How to calculate the angle between a line and the horizontal axis?
... = P2_y - P1_y
deltaX = P2_x - P1_x
Then calculate the angle (which runs from the positive X axis at P1 to the positive Y axis at P1).
angleInDegrees = arctan(deltaY / deltaX) * 180 / PI
But arctan may not be ideal, because dividing the differences this way will erase the distinction needed to ...