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What is :: (double colon) in Python when subscripting sequences?
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it means 'nothing for the first argument, nothing for the second, and jump by three'. It gets every third item of the sequence sliced.
Extended slices is what you want. New in Python 2.3
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parseInt vs unary plus, when to use which?
...ore like parseFloat since it also accepts decimals.
parseInt on the other hand stops parsing when it sees a non-numerical character, like the period that is intended to be a decimal point ..
+'2.3' === 2.3; //true
parseInt('2.3',10) === 2; //true
parseInt and parseFloat parses and bu...
Rank items in an array using Python/NumPy, without sorting array twice
I have an array of numbers and I'd like to create another array that represents the rank of each item in the first array. I'm using Python and NumPy.
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Delimiters in MySQL
...eople are using Delimiters. I tried myself to find out what are delimiters and what is their purpose. After 20 minutes of googling, I was not able to find an answer which satisfies me. So, my question is now: What are delimiters and when should I use them?
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How do I delete everything in Redis?
I want to delete all keys. I want everything wiped out and give me a blank database.
22 Answers
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Percentage width child element in absolutely positioned parent on Internet Explorer 7
...oking for. The following code displays exactly the same in Firefox 3 (mac) and IE7.
#absdiv {
position: absolute;
left: 100px;
top: 100px;
width: 80%;
height: 60%;
background: #999;
}
#pctchild {
width: 60%;
height: 40%;
background: #CCC;
}
#reldiv {
position: relati...
Undefined reference to pthread_create in Linux
...h answers to this question so far are incorrect.
For Linux the correct command is:
gcc -pthread -o term term.c
In general, libraries should follow sources and objects on command line, and -lpthread is not an "option", it's a library specification. On a system with only libpthread.a installed,
g...
Does a method's signature in Java include its return type?
... of a method declaration comprise the method signature—the method's name and the parameter types.
Since the question was edited to include this example:
public class Foo {
public int myMethod(int param) {}
public char myMethod(int param) {}
}
No, the compiler won't know the differe...
Use 'class' or 'typename' for template parameters? [duplicate]
...ommittee introduced a new keyword typename to resolve syntactic ambiguity, and decided to let it also be used to specify template types to reduce confusion, but for backward compatibility, class kept its overloaded meaning.
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Removing input background colour for Chrome autocomplete?
On a form I'm working on, Chrome is auto-filling the email and password fields. This is fine, however, Chrome changes the background colour to a pale yellow colour.
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