syntactic-sugar

In C# (and Java) a string is little more than a char array with a stored length and a few methods tacked on. Likewise, (reference vs. value stuff aside) objects are little more than glorified structs with inheritance and interfaces added. On one level, these additions feel like clear features and enhancements unto themselves. On another level, they feel like a marginal upgrade from the status of "syntactic sugar." To take this idea further, consider (I may have some details wrong, but the point remains): transistor elementary logic gate compound gate | | ALU flip-flop | | | | register RAM | |

is there a way we can import a class under another name? Like if i have a class called javax.C and another class called java.C i can import javax.C under the name C1 and import java.C under the name C2. We can do something like this in C#: using Sys=System; or Vb: Imports Sys=System No, there is nothing like that in Java. You can only import classes under their original name, and have to use the fully qualified name for all that you don't import (except those in java.lang and the current class's package). To be short, no, this isn't possible in Java. No. I think Java deliberately ditched

The following AWK format: /REGEX/ {Action} Will execute Action if the current line matches REGEX . Is there a way to add an else clause, which will be executed if the current line does not matches the regex, without using if-then-else explicitly, something like: /REGEX/ {Action-if-matches} {Action-if-does-not-match} Not so short: /REGEX/ {Action-if-matches} ! /REGEX/ {Action-if-does-not-match} But (g)awk supports the ternary operator too: { /REGEX/ ? matching=1 : matching = 0 ; if ( matching ==1 ) { matching_action } else { notmatching_action } } UPDATE : According to the great Glenn Jackman

I have been trying to get the rank of a vector in c++ using Rcpp. I have used other sugar functions like is_na(); Is there a similar sugar function for rank R function in c++. Also is there any list of available R sugar functions in Rcpp/ G. Grothendieck 1) There is an order function here and order(order(x)) is rank(x, ties = "first") . 2) A second way would be: match(x, sort(x)) ADDED Second approach. 来源： https://stackoverflow.com/questions/23606266/rcpp-sugar-for-rank-function

JavaScript has a nifty feature where you can assign several variables from properties in an object using one concise line. It's called destructuring assignment syntax which was added in ES6. // New object var o = {p1:'foo', p2:'bar', p3: 'baz'}; // Destructure var {p1, p2} = o; // Use the variables... console.log(p1.toUpperCase()); // FOO console.log(p2.toUpperCase()); // BAR I want to do something similar with C#. // New anonymous object var o = new {p1="foo", p2="bar", p3="baz"}; // Destructure (wrong syntax as of C#6) var {p1, p2} = o; // Use the variables... Console.WriteLine(p1.ToUpper())