When we look at transferring data we have to know how we want to format that data to transfer. A common, simple, file allows for it to easily be written from one system and read by another. But we didn’t always have a simple format that could be used for this purpose. We’d like to…
We’ve seen the benefits of passing variables by reference to a function. It allows you to change their value inside the function. Well, when we pass by reference, this is essentially using pointers – you just didn’t realize it. Therefore you can have instances like: Alternatively I can write it with passing the memory address…
No system, file format, data format, programming language, etc is perfect. However, instead of glossing over the information, it’s better to education oneself as to their shortcomings to ensure that you can work around the limitations. It is worth noting that while JSON is built as a subset of JavaScript it does not include support…
JSON comes with a lot of benefits, which is the reason why many web services provide data either in both XML and JSON, or just JSON. Some of the benefits include: Easy to parse the data. Low overhead (for transmitting the data between client and server) Built in web browser support. Modern JavaScript has it…
JavaScript Object Notation, or JSON, is a solution to the problem of how do we move data between systems, especially data between a server and a web client. JSON is an open-standards, data interchange format that uses a serializable string of data to store information. It was initiated in the early 2000’s by Douglas Crockford,…
A constant pointer means that the memory location will not change, not that the value at that memory location will not change. Consider the following code. What do you think will happen? Using const will make sure you always point to the right place. Using const with Pointers in C++ was originally found on Access…
OK, defining a new Datatype might be a bit of a stretch…how about, defining aliases? You can use the typedef keyword to define a new aliase for an existing data type in C++. The general form is: Let’s say you have experience with another language and you want to use a datatype name that they…
A Pointer variable, just called a pointer, holds the memory address of data that is stored. Through the pointer, you can read the address, and thus indirectly access the value of the variable. To access a value, you use the dereference operators (*) to get the value stored at that memory address. To store a…
