I found the following issue report, which says There is no ambiguity; the standard is clear as written. Library implementors are not permitted to add template parameters to standard library classes. This does not fall under the “as if” rule, so it would be permitted only if the standard gave explicit license for implementors to … Read more
The C++03 preprocessor is (at least intended to be) similar to the C preprocessor before C99. Although the wording and paragraph numbers are slightly different, the only technical differences I’m aware of between the two are that the C++ preprocessor handles digraphs (two-letter alternative tokens) and universal character names, which are not present in C. … Read more
As you’ve mentioned, namespace works for anything, not just for functions and objects. As Greg has pointed out, static means too many things already. Namespaces provide a uniform and consistent way of controlling visibility at the global scope. You don’t have to use different tools for the same thing. When using an anonymous namespace, the … Read more
In CSS 3, to quote from the spec, “there is no hexadecimal notation for an RGBA value” (see CSS Level 3 spec). Instead you can the use rgba() functional notation with decimals or percentages, e.g. rgba(255, 0, 0, 0.5) would be 50% transparent red. RGB channels are 0-255 or 0%-100%, alpha is 0-1. In CSS … Read more
?var=var#hash Everything after # is client side. Also, look into URL rewriting to get rid of ugly ?var=var.
The standard does require the memory of an std::vector to be contiguous. On the other hand, if you write something like: std::vector<std::vector<double> > v; the global memory (all of the v[i][j]) will not be contiguous. The usual way of creating 2D arrays is to use a single std::vector<double> v; and calculate the indexes, exactly as … Read more
You make the mistake of thinking of operator= as a two-argument function, where the side effects of the arguments must be completely evaluated before the function begins. If that were the case, then the expression i = ++i + 1 would have multiple sequence points, and ++i would be fully evaluated before the assignment began. … Read more
C language standard, draft n1256: 5.1.2.2.1 Program startup 1 The function called at program startup is named main. The implementation declares no prototype for this function. It shall be defined with a return type of int and with no parameters: int main(void) { /* … */ } or with two parameters (referred to here as … Read more
17.4.3.1.1 Macro names [lib.macro.names] 1 Each name defined as a macro in a header is reserved to the implementation for any use if the translation unit includes the header.164) 2 A translation unit that includes a header shall not contain any macros that define names declared or defined in that header. Nor shall such a … Read more
what are the practical benefits of allowing duplicate property-names in the initializers There are no practical benefits as such. Now that there are computed property keys in ECMA Script 6, the actual value of the keys will be determined only at the runtime. As it is, keys can be added to objects at runtime and … Read more