The Go Language Specification (Address operators) does not allow to take the address of a numeric constant (not of an untyped nor of a typed constant). The operand must be addressable, that is, either a variable, pointer indirection, or slice indexing operation; or a field selector of an addressable struct operand; or an array indexing … Read more
You use the collection initializer syntax, but you still need to make a new Dictionary<string, string> object first as the shortcut syntax is translated to a bunch of Add() calls (like your code): var data = new Dictionary<string, string> { { “test”, “val” }, { “test2”, “val2” } }; In C# 6, you now have … Read more
var d = 1.0d; // double var d0 = 1.0; // double var d1 = 1e+3; // double var d2 = 1e-3; // double var f = 1.0f; // float var m = 1.0m; // decimal var i = 1; // int var ui = 1U; // uint var ul = 1UL; // ulong var … Read more
The whole misconception about python’s raw strings is that most of people think that backslash (within a raw string) is just a regular character as all others. It is NOT. The key to understand is this python’s tutorial sequence: When an ‘r‘ or ‘R‘ prefix is present, a character following a backslash is included in … Read more
You can’t due to type erasure. Java generics are little more than syntactic sugar for Object casts. To demonstrate: List<Integer> list1 = new ArrayList<Integer>(); List<String> list2 = (List<String>)list1; list2.add(“foo”); // perfectly legal The only instance where generic type information is retained at runtime is with Field.getGenericType() if interrogating a class’s members via reflection. All of … Read more
-2147483648 is not a “number”. C++ language does not support negative literal values. -2147483648 is actually an expression: a positive literal value 2147483648 with unary – operator in front of it. Value 2147483648 is apparently too large for the positive side of int range on your platform. If type long int had greater range on … Read more
You cannot. A basic numeric constant is considered an integer (or long if followed by a “L”), so you must explicitly downcast it to a byte to pass it as a parameter. As far as I know there is no shortcut.
The line: while( a[ 0xFULL?’\0′:-1:>>>=a<:!!0X.1P1 ] ) contains the digraphs :> and <:, which translate to ] and [ respectively, so it’s equivalent to: while( a[ 0xFULL?’\0′:-1 ] >>= a[ !!0X.1P1 ] ) The literal 0xFULL is the same as 0xF (which is hex for 15); the ULL just specifies that it’s an unsigned long … Read more
Primitives are a different kind of type than objects created from within Javascript. From the Mozilla API docs: var color1 = new String(“green”); color1 instanceof String; // returns true var color2 = “coral”; color2 instanceof String; // returns false (color2 is not a String object) I can’t find any way to construct primitive types with … Read more
For reference—future Python possibilities: Starting with Python 2.6 you can express binary literals using the prefix 0b or 0B: >>> 0b101111 47 You can also use the new bin function to get the binary representation of a number: >>> bin(173) ‘0b10101101′ Development version of the documentation: What’s New in Python 2.6