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Find XOR of all numbers in a given range
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This is a pretty clever solution -- it exploits the fact that there is a pattern of results in the running XORs. The f() function calculates the XOR total run from [0, a]. Take a look at this table for 4-bit numbers:
0000 <- 0 [a]
0001 <- 1 [1]
0010 &l...
Automatic text translation at MSDN pages - How to turn off?
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When you hit the "Original" radio button at the top, you see English, with German in the yellow hover box.
If you visit the original English site, you don't see a translation, not even on hover.
You switch to English by replacing /de-d...
How to import existing Git repository into another?
I have a Git repository in a folder called XXX , and I have second Git repository called YYY .
15 Answers
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Get Image size WITHOUT loading image into memory
...cstring for .open says:
def open(fp, mode="r"):
"Open an image file, without loading the raster data"
There are a few file operations in the source like:
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prefix = fp.read(16)
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fp.seek(0)
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but these hardly constitute reading the whole file. In fact .open simply returns a file...
Split Java String by New Line
I'm trying to split text in a JTextArea using a regex to split the String by \n However, this does not work and I also tried by \r\n|\r|n and many other combination of regexes.
Code:
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Different between parseInt() and valueOf() in java?
...lueOf(String) does indeed say that the String is interpreted exactly as if it were given to Integer.parseInt(String). However, valueOf(String) returns a new Integer() object whereas parseInt(String) returns a primitive int.
If you want to enjoy the potential caching benefits of Integer.valueOf(int...
The tilde operator in Python
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It is a unary operator (taking a single argument) that is borrowed from C, where all data types are just different ways of interpreting bytes. It is the "invert" or "complement" operation, in which all the bits of the input ...
ReactJS state vs prop
... going back and forth as to how to structure a ReactJS component as complexity grows and could use some direction.
6 Answe...
How do I represent a time only value in .NET?
Is there a way one can represent a time only value in .NET without the date? For example, indicating the opening time of a shop?
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How do I use a custom Serializer with Jackson?
... good way. But if you don't mind a custom serializer, there's no need to write one for Item but rather one for User -- if so, it'd be as simple as:
public void serialize(Item value, JsonGenerator jgen,
SerializerProvider provider) throws IOException,
JsonProcessingException {
jgen.writeNu...