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Why can't I use float value as a template parameter?
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The current C++ standard does not allow float (i.e. real number) or character string literals to be used as template non-type parameters. You can of course use the float and char * types as normal arguments.
Perhaps the author is using a compiler t...
Why does parseInt yield NaN with Array#map?
... be used to perform type conversion. However, it differs from parseInt: it doesn't parse the string and returns NaN if the number cannot be converted. For instance:
console.log(parseInt("19asdf"));
console.log(Number("19asf"));
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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...tances represent Scala types. These objects have more information than JVM does, which enable us to test for the full, parameterized type.
Note, however, that a Manifest is still an evolving feature. As an example of its limitations, it presently doesn't know anything about variance, and assumes eve...
sort object properties and JSON.stringify
...tringify(sortMyObj, Object.keys(sortMyObj).sort());
However, this method does remove any nested objects that aren't referenced and does not apply to objects within arrays. You will want to flatten the sorting object as well if you want something like this output:
{"a":{"h":4,"z":3},"b":2,"c":1}
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Where in a virtualenv does the custom code go?
...thing about virtualenv is that it supports many different use cases: there doesn't need to be one right way.
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How do you handle multiple submit buttons in ASP.NET MVC Framework?
...o be the happy marriage of the other techniques used. Works perfectly and doesn't effect localization.
– trevorc
Nov 29 '11 at 22:33
18
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What is the simplest way to get indented XML with line breaks from XmlDocument?
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Oddly enough, for me this does nothing except setting the xml header's encoding to UTF-16. Strangely enough, it does this even if I explicitly set settings.Encoding = Encoding.UTF8;
– Nyerguds
May 13 '13 at 13:43...
std::string to float or double
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std::string num = "0.6";
double temp = ::atof(num.c_str());
Does it for me, it is a valid C++ syntax to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ahaha you have a Qt project ...
QString winO...
Why is the asterisk before the variable name, rather than after the type?
...use of the same-typed variables do. When you declare an array of ints, it does not look like: int[10] x. This is simply not C's syntax. The grammar explicitly parses as: int (*x), and not as (int *) x, so placing the asterisk on the left is simply misleading and based on a misunderstanding of C dec...
Difference between abstraction and encapsulation?
...on is C’s qsort function to sort data:
The thing about qsort is that it doesn't care about the data it sorts — in fact, it doesn’t know what data it sorts. Rather, its input type is a typeless pointer (void*) which is just C’s way of saying “I don't care about the type of data” (this is...