It doesn’t work because it is being parsed as a FunctionDeclaration, and the name identifier of function declarations is mandatory. When you surround it with parentheses it is evaluated as a FunctionExpression, and function expressions can be named or not. The grammar of a FunctionDeclaration looks like this: function Identifier ( FormalParameterListopt ) { FunctionBody … Read more
You have to single quote your src string inside of the double quotes: <div ng-include src=””https://stackoverflow.com/questions/13943471/views/sidepanel.html””></div> Source
Foo(int num): bar(num) This construct is called a Member Initializer List in C++. Simply said, it initializes your member bar to a value num. What is the difference between Initializing and Assignment inside a constructor? Member Initialization: Foo(int num): bar(num) {}; Member Assignment: Foo(int num) { bar = num; } There is a significant difference … Read more
Python evaluates expressions from left to right. Notice that while evaluating an assignment, the right-hand side is evaluated before the left-hand side. Python docs: Evaluation order That means the following for the expression a,b = b,a : The right-hand side b,a is evaluated, that is to say, a tuple of two elements is created in … Read more
try if ! grep -q sysa /etc/passwd ; then grep returns true if it finds the search target, and false if it doesn’t. So NOT false (! false) == true. if evaluation in shells are designed to be very flexible, and many times doesn’t require chains of commands (as you have written). Also, looking at … Read more
I’ve always kept this around in a util file. You can use it as a mixin on your own classes too. class dotdict(dict): “””dot.notation access to dictionary attributes””” __getattr__ = dict.get __setattr__ = dict.__setitem__ __delattr__ = dict.__delitem__ mydict = {‘val’:’it works’} nested_dict = {‘val’:’nested works too’} mydict = dotdict(mydict) mydict.val # ‘it works’ mydict.nested = … Read more
Below is my (current) favorite demonstration of why parsing C++ is (probably) Turing-complete, since it shows a program which is syntactically correct if and only if a given integer is prime. So I assert that C++ is neither context-free nor context-sensitive. If you allow arbitrary symbol sequences on both sides of any production, you produce … Read more
Use the ll (el-el) long-long modifier with the u (unsigned) conversion. (Works in windows, GNU). printf(“%llu”, 285212672);
Furthermore, you also have || which is the logical or, and also ; which is just a separator which doesn’t care what happend to the command before. $ false || echo “Oops, fail” Oops, fail $ true || echo “Will not be printed” $ $ true && echo “Things went well” Things went well $ … Read more
Unfortunately the JSON specification does not allow a trailing comma. There are a few browsers that will allow it, but generally you need to worry about all browsers. In general I try turn the problem around, and add the comma before the actual value, so you end up with code that looks like this: s.append(“[“); … Read more