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How do I get a class instance of generic type T?
...lic void bar() {
// you can access the typeParameterClass here and do whatever you like
}
}
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Start a git commit message with a hashmark (#)
...alternative clean-up mode.
E.g.
git commit --cleanup=whitespace
If you do this you have to be careful to remove all # lines that you don't want to appear in the commit.
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What is the difference between save and insert in Mongo DB?
...aves differently if it is passed with an "_id" parameter.
For save, If the document contains _id, it will upsert querying the collection on the _id field, If not, it will insert.
If a document does not exist with the specified _id value, the save() method performs an insert with the specified field...
How do you set, clear, and toggle a single bit?
How do you set, clear, and toggle a bit?
30 Answers
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Why do people still use primitive types in Java?
...d it takes 43 seconds to run. Taking the Long into the primitive brings it down to 6.8 seconds... If that's any indication why we use primitives.
The lack of native value equality is also a concern (.equals() is fairly verbose compared to ==)
for biziclop:
class Biziclop {
public static void...
Why do we need a fieldset tag?
Why do we need a <fieldset> tag? Whatever purpose it serves is probably a subset of the form tag.
10 Answers
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Why is printing to stdout so slow? Can it be sped up?
...re returning before anything is actually written to physical disk. (The OS does this later, combining many thousands of individual writes into a big, efficient chunks.)
The terminal, on the other hand, does little or no buffering: each individual print / write(line) waits for the full write (i.e. d...
What is Python used for? [closed]
...clean and uniform syntax.
Python is dynamically typed: it means that you don't declare a type (e.g. 'integer') for a variable name, and then assign something of that type (and only that type). Instead, you have variable names, and you bind them to entities whose type stays with the entity itself. ...
Can you break from a Groovy “each” closure?
...se a "find" closure instead of an each and return true when you would have done a break.
This example will abort before processing the whole list:
def a = [1, 2, 3, 4, 5, 6, 7]
a.find {
if (it > 5) return true // break
println it // do the stuff that you wanted to before break
re...
Is there a builtin identity function in python?
I'd like to point to a function that does nothing:
8 Answers
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