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moment.js - UTC gives wrong date
...time defaults to midnight.
In your code, you create a local date and then convert it to the UTC timezone (in fact, it makes the moment instance switch to UTC mode), so when it is formatted, it is shifted (depending on your local time) forward or backwards.
If the local timezone is UTC+N (N being a...
How can I obtain the element-wise logical NOT of a pandas Series?
... the bitwise operator:
In [1]: ~True
Out[1]: -2
As @geher says, you can convert it to bool with astype before you inverse with ~
~df['A'].astype(bool)
0 False
1 True
Name: A, dtype: bool
(~df['A']).astype(bool)
0 True
1 True
Name: A, dtype: bool
...
If vs. Switch Speed
...
They also convert to tree comparisons in some cases. The reasoning is somewhat complex but basically boils down to the table indirection neutering modern cpu jump target buffers and so wipes out the branch predictor. I vaguely recall...
Using awk to remove the Byte-order mark
...
In addition to converting CRLF line endings to LF, dos2unix also removes BOMs:
dos2unix *.txt
dos2unix also converts UTF-16 files with a BOM (but not UTF-16 files without a BOM) to UTF-8 without a BOM:
$ printf '\ufeffä\n'|iconv -f utf...
When do you use map vs flatMap in RxJava?
... in RxJava?. And I think a simple demo is more specific.
When you want to convert item emitted to another type , in your case converting file to String, map and flatMap can both work. But I prefer map operator because it's more clearly.
However in some place, flatMap can do magic work but map can'...
Why does changing the sum order returns a different result?
...ory, floating points use a special format along the lines of IEEE 754 (the converter provides much better explanation than I can).
Anyways, here's the float converter.
http://www.h-schmidt.net/FloatConverter/
The thing about the order of operations is the "fineness" of the operation.
Your first ...
Smooth GPS data
...n be ignored, because if you put scaling factors into the Kalman filter to convert them all into the same units, then those scaling factors end up cancelling out when converting the results back into the original units.
The code could be improved, because it assumes that the best estimate of curren...
Java SafeVarargs annotation, does a standard or best practice exist?
...a simple "re-writing" at compile-time: a varargs parameter of type X... is converted into a parameter of type X[]; and every time a call is made to this varargs method, the compiler collects all of the "variable arguments" that goes in the varargs parameter, and creates an array just like new X[] { ...
What is the difference between String and string in C#?
...mework designers have followed this pattern, good examples being in the BitConverter, BinaryReader and Convert classes.
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What is a “surrogate pair” in Java?
... does not support UTF-32
"????".equals("\u1F309") // false
3. You can convert Unicode character to Java String
"????".equals(new String(Character.toChars(0x0001F309))) //true
4. String.substring() does not consider supplementary characters
"????????".substring(0,1) //"?"
"????????".substri...