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std::function and std::bind: what are they, and when should they be used?
I know what functors are and when to use them with std algorithms, but I haven't understood what Stroustrup says about them in the C++11 FAQ .
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Why is it wrong to use std::auto_ptr with standard containers?
...se of move semantics (its specification requires rvalue references), so it fundamentally requires C++11. However (and related) the C++11 Standard no longer says that an STL element type must be "copy-constructible" and "assignable"; being move-constructible and move-assignable suffices. Indeed uniqu...
C# vs Java Enum (for those new to C#)
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@finnw: I've never heard of the Code Review SE site - thanks for that! I've continues this discussion there (although it might deserve its own question here on Programmers).
– Allon Guralnek
Oct 21 '11 at 17:29
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C# using streams
...sfer the strings to and from the stream as bytes. So
myStreamWriter.Write(123);
will write "123" (three characters '1', '2' then '3') to the stream. If you're dealing with text files (e.g. html), StreamReader and StreamWriter are the classes you would use.
Whereas
myBinaryWriter.Write(123);
w...
Validate that a string is a positive integer
...ue);
},
false
);
test("1", true);
test("1.23", false);
test("1234567890123", true);
test("1234567890123.1", false);
test("0123", false); // false because we don't handle leading 0s
test(" 123 ", false); // false because we don't handle whitespace
<label>
String:
<inp...
How to POST raw whole JSON in the body of a Retrofit request?
...nvertion in the rest of your application code:
interface ServiceApi {
fun login(username: String, password: String) =
jsonLogin(createJsonRequestBody(
"username" to username, "password" to password))
@POST("/api/login")
fun jsonLogin(@Body params: RequestBod...
Difference between classification and clustering in data mining? [closed]
... answer instead of just a link. Link only answers are frowned upon because sites go down and with it the answer.
– Mathemats
Mar 4 '16 at 0:36
3
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How to sort in-place using the merge sort algorithm?
...that the time-complexity of in-place algorithm mentioned in the penguin.ew site is O(log n * n^2).Since we have log n merges and each merge is of the order O(n ^2).Isnt that right ?
– code4fun
Apr 20 '16 at 6:38
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What is a 'semantic predicate' in ANTLR?
...) throws Exception {
ANTLRStringStream in = new ANTLRStringStream("123, 456, 7 , 89");
NumbersLexer lexer = new NumbersLexer(in);
CommonTokenStream tokens = new CommonTokenStream(lexer);
NumbersParser parser = new NumbersParser(tokens);
parser.parse();
}...
Items in JSON object are out of order using “json.dumps”?
...this we get:
>>> import OrderedDict
>>> unordered={"id":123,"name":"a_name","timezone":"tz"}
>>> ordered = OrderedDict.OrderedDict( [("id",123), ("name","a_name"), ("timezone","tz")] )
>>> e = OrderedJsonEncoder()
>>> print e.encode( unordered )
{"timezo...