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Determining complexity for recursive functions (Big O notation)
...from n before calling the function, but n-5 is also O(n).
(Actually called order of n/5 times. And, O(n/5) = O(n) ).
int recursiveFun3(int n)
{
if (n <= 0)
return 1;
else
return 1 + recursiveFun3(n/5);
}
This function is log(n) base 5, for every time we divide by 5
befor...
How to convert SecureString to System.String?
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@RasmusFaber My bad, I had added a Database.GetConnectionString() into your code, to get my secureString, which was the evil part that took almost 5sec(and yes I should look into that! :) Your code took .00 mili seconds in my stopwatch so it's all good. Thanks for point...
Immutable vs Mutable types
... bytearray()
set type: set()
mapping type: dict()
classes, class instances
etc.
One trick to quickly test if a type is mutable or not, is to use id() built-in function.
Examples, using on integer,
>>> i = 1
>>> id(i)
***704
>>> i += 1
>>> i
2
>>> id(...
How does Spring Data JPA differ from Hibernate for large projects?
...ce MyObjectRepositoryCustom {
List<MyObject> findByNameWithWeirdOrdering(String name);
}
MyObjectRepositoryCustomImpl - where you actually implement those methods with an autowired EntityManager:
public class MyObjectRepositoryCustomImpl implements MyObjectRepositoryCustom {
@Auto...
How can I convert JSON to a HashMap using Gson?
...ng,Object>();
map = (Map<String,Object>) gson.fromJson(json, map.getClass());
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Class type check in TypeScript
...checking so you can do Std.is(pet, Fish), which works on types, interfaces etc.
– Mark Knol
Nov 21 '16 at 14:58
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How to undo 'git reset'?
...git reset HEAD@{3} is required without going into reflog git reset HEAD~3 etc is a common situation
– zainengineer
Aug 15 '14 at 9:06
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Received fatal alert: handshake_failure through SSLHandshakeException
... -Dhttps.protocols=TLSv1.2,TLSv1.1,TLSv1
The jvm will negotiate in this order. The servers with the latest update will do 1.2, the buggy ones will go down to v1 and that works with the similar v1 in java 7.
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What does 'predicate' mean in the context of computer science? [duplicate]
...t parameter and return either true or false. Predicates are used in higher order functions, applied to a given function(a.k.a transformer) element-wise to a list of elements and returns a list of results. Transformer is a function applies to each element and will produce one or more new elements.
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Are PHP short tags acceptable to use?
... to discuss the "big questions" like why we're here, how did it all begin, etc. Shorttag support is not guaranteed on shared servers and it's being removed completely next major version. That's all you need to know.
– Oli
Dec 1 '09 at 11:49
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