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Why doesn't Python have a sign function?
I can't understand why Python doesn't have a sign function. It has an abs builtin (which I consider sign 's sister), but no sign .
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What does this thread join code mean?
In this code, what does the two joins and break mean? t1.join() causes t2 to stop until t1 terminates?
10 Answers
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Java HashMap performance optimization / alternative
...or every object:
public int hashCode() {
// assume that both a and b are sorted
return a[0] + powerOf52(a[1], 1) + powerOf52(b[0], 2) + powerOf52(b[1], 3) + powerOf52(b[2], 4);
}
public static int powerOf52(byte b, int power) {
int result = b;
for (int i = 0; i < p...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...roup to a compatible delegate type
(emphasis added) is deeply misleading and unfortunate. I'll have a talk with Mads about getting the word "compatible" removed here.
The reason this is misleading and unfortunate is because it looks like this is calling out to section 15.2, "Delegate compatibi...
Difference between viewDidLoad and viewDidAppear
What is the difference between viewDidLoad and viewDidAppear ? What kind of initialization or custom code goes into those functions?
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rvm installation not working: “RVM is not a function”
...inal after this setting the flag.
Sometimes it is required to set the command to /bin/bash --login.
For remote connections it is important to understand the differene between running interactive ssh session and executing single commands.
While running ssh server and then working with the server...
What are the differences between the urllib, urllib2, urllib3 and requests module?
...ython, what are the differences between the urllib , urllib2 , urllib3 and requests modules? Why are there three? They seem to do the same thing...
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Difference between DateTime and Time in Ruby
What's the difference between DateTime and Time classes in Ruby and what factors would cause me to choose one or the other?
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Case conventions on element names?
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Most XML standards originating from the W3C tend to use lower case with hyphens.
There is a philosophical distinction between seeing XML as a format for platform neutral documents, which W3C standards try to encourage, and languages su...
Is it good style to explicitly return in Ruby?
...g my own style guidelines but I'm thinking about releasing my source code, and I'd like it to adhere to any unwritten rules that might exist.
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