In other programming languages : c=a a=b b=c 1 2 3 In Python, it’s better to use the assignment in one line code : b,a=a,b 1 You may have already seen it but do you know how it works? The comma is the syntax for building the tuple. A tuple is created on the right (t...
In the previous installment, I rambled on about the difference of “char *line;” and “char line[];”. The first is a “pointer to char(s)” and the second is “an array of char(s)”. But, when you pass them into a function, they both are treated as a pointer to those char...
JavaScript like Destructuring using Structured Binding in C++ pair<int, int> cur = {1, 2}; auto [x, y] = cur; // x is now 1, y is now 2 // no need of cur.first and cur.second array<int, 3> arr = {1, 0, -1}; auto [a, b, c] = arr; // a is now 1, b is ...
We have to change the order of the returns, leaving the conditionalresultfor last. This doesn’t make a lot of sense in other programming languages, where the function ends after returning something, but there is a reason the C in CSS stands for Cascade: this order allows the conditional r...
Matrices can be represented as 2-dimensional arrays which are not used that often in everyday programming and some candidates may feel uncomfortable using them. The exact problem you are given can vary of course but building circular or spiraling matrices is one of the more complex ones in ...
-X POST 'https://slack.com/api/chat.postMessage' | jq -c We’re using jq to properly format a JSON message here. Without it, there’s a high probability that the $changelog would break due to having line breaks and quotes in it; jq will take care of the escaping for us. I’m...
For example, you could add a "Weighted Value" column to your source data. The formula in the column should multiply the weight times the value to be weighted. This means that if your weight is in column C and your value to be weighted is in column D, your formula in the Weighted Val...
C++ was first released to the public in 1985. In the early years at least, it was effectively a superset of C. Indeed, its creator,Bjarne Stroustrup, first set out to produce “C with classes”, combining the performance and low-level capabilities of the C language with the abstractions ...
Marty’s success can be at least partially attributed to the design of BizTalk Server, which is built to meet the special challenges inherent in programming connected systems without, in some cases, even having to write code. But don’t let the pretty drag-and-drop f...
The C++ Programming Language (2nd Ed.), section 6.2.2, “The order of evaluation of subexpressions within an expression is undefined.” This is, in fact, a hold-over from Kernighan & Ritchie’s original definition in TheC Programming Language (of which I don’t have a copy on hand, or...