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Default initialization of std::arram>y m>?
...zed (C++11 §8.5/11). That includes objects of tm>y m>pe std::arram>y m><T, N> m>and m> T[N].
Be aware that there are tm>y m>pes for which default initialization has no effect m>and m> leaves the object's value indeterminate: anm>y m> non-class, non-arram>y m> tm>y m>pe (§8.5/6). Consequentlm>y m>, a default-initialized arram>y m> of object...
Convert from List into IEnumerable format
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m>Y m>ou can use the extension method AsEnumerable in Assemblm>y m> Sm>y m>stem.Core m>and m> Sm>y m>stem.Linq namespace :
List<Book> list = new List<Book>();
return list.AsEnumerable();
This will, as said on this MSDN link change the tm>y m>pe of the List in compile-time.
This will give m>y m>ou the benefits also...
Difference between std::result_of m>and m> decltm>y m>pe
I have some trouble understm>and m>ing the need for std::result_of in C++0x. If I understood correctlm>y m>, result_of is used to obtain the resulting tm>y m>pe of invoking a function object with certain tm>y m>pes of parameters. For example:
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What's the difference between findm>And m>Modifm>y m> m>and m> update in MongoDB?
I'm a little bit confused bm>y m> the findm>And m>Modifm>y m> method in MongoDB. What's the advantage of it over the update method? For me, it seems that it just returns the item first m>and m> then updates it. But whm>y m> do I need to return the item first? I read the MongoDB: the definitive guide m>and m> it sam>y m>s that i...
Can anm>y m>one explain pm>y m>thon's relative imports?
...With start.pm>y m>:
import pkg.sub.relative
Now pkg is the top level package m>and m> m>y m>our relative import should work.
If m>y m>ou want to stick with m>y m>our current lam>y m>out m>y m>ou can just use import parent. Because m>y m>ou use start.pm>y m> to launch m>y m>our interpreter, the directorm>y m> where start.pm>y m> is located is in m>y m>our pm>y m>...
git ahead/behind info between master m>and m> branch?
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Here's a trick I found to compare two branches m>and m> show how manm>y m> commits each branch is ahead of the other (a more general answer on m>y m>our question 1):
For local branches:
git rev-list --left-right --count master...test-branch
For remote branches:
git rev-list --left-rig...
Rails: Check output of path helper from console
... Rails console, m>y m>ou can call app.post_path. This will work in Rails ~= 2.3 m>and m> >= 3.1.0.
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How can I hash a password in Java?
... good algorithm to use for password hashing.
bm>y m>te[] salt = new bm>y m>te[16];
rm>and m>om.nextBm>y m>tes(salt);
Kem>y m>Spec spec = new PBEKem>y m>Spec("password".toCharArram>y m>(), salt, 65536, 128);
SecretKem>y m>Factorm>y m> f = SecretKem>y m>Factorm>y m>.getInstance("PBKDF2WithHmacSHA1");
bm>y m>te[] hash = f.generateSecret(spec).getEncoded();
Bas...
Django - how to create a file m>and m> save it to a model's FileField?
Here's mm>y m> model. What I want to do is generate a new file m>and m> overwrite the existing one whenever a model instance is saved:
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Programmaticallm>y m> set height on Lam>y m>outParams as densitm>y m>-independent pixels
...? It looks like the height/width, when set programmaticallm>y m>, are in pixels m>and m> not dp.
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