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Calculating the difference between two Java date instances
...it.
TimeUnit is java.util.concurrent.TimeUnit, a standard Java enum going from nanos to days.
Human readable diff (without lib)
public static Map<TimeUnit,Long> computeDiff(Date date1, Date date2) {
long diffInMillies = date2.getTime() - date1.getTime();
//create the list
Li...
I get exception when using Thread.sleep(x) or wait()
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You have a lot of reading ahead of you. From compiler errors through exception handling, threading and thread interruptions. But this will do what you want:
try {
Thread.sleep(1000); //1000 milliseconds is one second.
} catch(InterruptedExcepti...
Why does the C++ STL not provide any “tree” containers?
... general and involved enough to merit specialized tree classes independent from it. Also, the fact that std::map and std::set require a tree is, IMO, another argument for having an stl::red_black_tree etc. Finally, the std::map and std::set trees are balanced, an std::tree might not be.
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Encoding URL query parameters in Java
...ould it encode &sort=name or not? There is no way to distinguish value from the URL. That is the exact reason why you need value encoding in the first place.
– Pijusn
Aug 23 '14 at 10:35
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How to detect a loop in a linked list?
...ial linked list is like this 1->2->3->4->5->2 (with a cycle from 5 to 2), then the reversed list looks like 1->2<-3<-4<-5 ? And if the reverse is that , the final reconstructed list will be screwed up ?
– Zenil
Mar 8 '15 at 1:08
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check if a std::vector contains a certain object? [duplicate]
...td::set also guarantees all the added elements are unique, which saves you from having to do anything like if not contained then push_back()....
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How to Convert Boolean to String
...t meed SO guidelines for an "Answer". Please edit to include relevant info from the link into your post. While the information is useful, it is more appropriately left as a "Comment" to the OP. All necessary information from the link must be embedded in the answer. 1) If the link were to become unr...
How to ignore deprecation warnings in Python
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From documentation of the warnings module:
#!/usr/bin/env python -W ignore::DeprecationWarning
If you're on Windows: pass -W ignore::DeprecationWarning as an argument to Python. Better though to resolve the issue, by cast...
How to determine whether a given Linux is 32 bit or 64 bit?
... I have a 32 bit kernel on 64 bit hardware and get "x86_64" from 'uname -m' (on Debian). The man page for uname says that -m shows the machine hardware name, so that seems correct.
– Tony Meyer
Sep 4 '09 at 20:33
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Accessing nested JavaScript objects and arays by string path
... using reduce is an excellent solution (one can also use _.reduce() from the underscore or lodash library)
– Alp
May 22 '14 at 14:51
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