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What is a smart pointer and when should I use one?
...that std::unique_ptr instances cannot be copied. This prevents the pointer from being deleted multiple times (incorrectly). You can, however, pass references to it around to other functions you call.
std::unique_ptrs are useful when you want to tie the lifetime of the object to a particular block o...
Correct way to populate an Array with a Range in Ruby
.... But this creates another array inside the array, I simply want the range from 2 to 25. Yet if I try order << (2.25) I get the error can't convert Range into Integer.
– kakubei
Nov 10 '11 at 14:29
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zsh compinit: insecure directories
... a solution, but do not mention why this warning occurs. Here's an excerpt from ZSH's compinit:
For security reasons compinit also checks if the completion system would use files not owned by root or by the current user, or files in directories that are world- or group-writable or that are not o...
Representing Monetary Values in Java [closed]
...e timeandmoney, and whilst I applaud them for trying to prevent developers from having to reinvent the wheel, I just don't have enough confidence in a pre-alpha library to use it in a production environment. Besides, if you dig around under the hood, you'll see they use BigDecimal too.
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IIS: Idle Timeout vs Recycle
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Idle Timeout is if no action has been asked from your web app, it the process will drop and release everything from memory
Recycle is a forced action on the application where your processed is closed and started again, for memory leaking purposes and system health
Th...
Fragment is not being replaced but put on top of the previous one
...em but my issue was that I was using two different Fragment managers:
One from getSupportFragmentManager() and one from getFragmentManager(). If I added one fragment with the SupportFragmentManager and then tried replacing the fragment with the FragmentManager, the fragment would just get added on ...
Add custom messages in assert?
... arguments:
assert(("A must be equal to B", a == b));
(this was copied from above comments, for better visibility)
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Choosing the best concurrency list in Java [closed]
...ol has a fixed number of threads. These threads need to write and read from a shared list frequently.
6 Answers
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What is the difference between ? and Object in Java generics?
...ap<String, Object>. Say you want to write a method that accepts maps from Strings to anything: If you would write
public void foobar(Map<String, Object> ms) {
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}
you can't supply a HashMap<String, String>. If you write
public void foobar(Map<String, ?> ms) {
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How to send cookies in a post request with the Python Requests library?
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The latest release of Requests will build CookieJars for you from simple dictionaries.
import requests
cookies = {'enwiki_session': '17ab96bd8ffbe8ca58a78657a918558'}
r = requests.post('http://wikipedia.org', cookies=cookies)
Enjoy :)
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