Questions tagged [control-flow]
Control flow (or flow of control) is the order in which individual statements, instructions or function calls of an imperative program are executed or evaluated.
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Is there a reason "replace conditional with table" isn't a standard refactoring?
I'm preparing a lecture where I will start with a many-branched conditional statement and replace it with a table. For example, I could start with:
function getMonthName(monthNumber) {
if (...
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Control flow and communication with two separate frontends (maybe with exceptions)?
I am trying to write a backend for use with a completely text based UI for one shot operations (eg. python scriptname arg, executes that argument and exits) and a GUI using the curses library for some ...
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Is this a case where 'else' is inevitable?
I am writing some code that enables / disables a certain kind of hardware function. To enable it on, I have to call some methods, and to disable it, some others.
Of course I want this code to be clean,...
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Why is the If-then-else, while loop and for loop a structured programming control structure?
When defining McCabe's essential complexity, the idea of a structured programming control structure is present. I don't understand why an if-then-else, a while loop or a for loop can be reduced to a ...
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Creating a control flow graph for a given function
Given is a short Java function and I like to create a control flow graph for it but I'm not sure if it's fine like that? Because I left some things away such as variables that have already been ...
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How a Control-Flow Graph looks with many (Nested) Functions
From what I can remember the Control-Flow Graphs for which I have seen images have mostly been of single functions. So basically just statements with perhaps looping. But I am wondering what a control-...
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Should "else" be used in situations where control flow renders it redundant?
I sometimes stumble upon code similar to the following example (what this function does exactly is out of the scope of this question):
function doSomething(value) {
if (check1(value)) {
return -...
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What's the OOP way of dealing with a flow control heavy application?
I'm refactoring a huge WPF application whose complexity stems from the way it deals with flow control. It has a lot of "tiny business rules" that make it really difficult to make a modification ...
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How do I achieve non-linear non-dependent control flow using Promises (in server-side ES6)
Coming over from the Java world, I am having trouble translating a multi-threaded approach to IO to the ES6 Promises concept of aysnc IO. Many of the examples I have seen on promises show a linear ...
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How to compute whether it is guaranteed the variable is set?
Assuming declarations are expressions consider such code:
if ((var x = foo()) and (var y = x)) or (var z = bar()) then
println(z);
end
The reference to x is OK, because at this point x has to be ...
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Problem on recursion
void function(int x){
if(x<=0)
return;
function(x--);
}
This is a recursion function which is called with the value of x = 20.
The Recursive call will take place in this way
...
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Optimistic & Pessimistic Programming - Ensuring multiple tasks are called only once for specific record
Let's say you have 10 database records which you need to process in the following way:
Start
Pull 2 records from the database with the 'Processed' flag set to 'false'
Call the external web service ...
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Flow Chart - While Loops process
I'm having difficulties understanding whether or not this is the right process to use for a flow chart which illustrates the processes involved in an algorithm.
For this, assume the following:
A 1D ...
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Control flow testing in white box - static or dynamic?
Yesterday I asked a question that happened to have another meaning inside. I can see that Control/data flow is often mentioned to be static analysis (when tools is used) or dynamic analysis testing in ...
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Where did the notion of "one return only" come from?
I often talk to programmers who say "Don't put multiple return statements in the same method." When I ask them to tell me the reasons why, all I get is "The coding standard says so." or "It's ...