Originally legacy code meant code 'inherited' from authors or from a previous program/system version. Since Michael Feathers published his "Working Effectively with Legacy Code" book, new definition came to be, where code without tests is legacy code.
Questions tagged [legacy-code]
480 questions
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votes
1 answer
Syncing with stdio is making program i/o non - interactive?
#include
using namespace std;
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout << "Print two numbers: ";
int x, y;
cin >> x >> y;
cout << x << y;
return 0;
}
Input : 23 24
Output : Print two…
tusharRawat
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votes
1 answer
Compatibility of Generics with legacy code - why does the foreach blow at runtime while iterator works fine
I have the following test code. I'm trying to understand the interoperability between Generics and legacy.
List myList = new ArrayList();
myList.add("abc");
myList.add(1);
myList.add(new Object());
System.out.println("Printing the unchecked…
g13n
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-1
votes
1 answer
link against a legacy library: -lgfortranbegin from a premade makefile
I got some trouble trying to compile a programm developed by some researcher supposed to compute in a very precise way fourier transform and some other useful operation scientific paper here, whereas all the files needed and the makefile are…
MaDryn
- 31
- 7
-1
votes
1 answer
Trouble Converting code due to dual parentheses
I am trying to convert some old legacy from VB to C# but I am running into an issue with a particular area regarding dual parentheses
Dim _atts As List(Of String()) = List(Of String())
Dim tmp() As String = Me._atts.Item(AttNo)(ValNo).Split(_SVM)
I…
Corbin Taylor
- 45
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votes
2 answers
Why change UB that will always work as intended?
In the legacy code base I'm working on, I discovered the line
n = ++n % size;
that is just a bad phrasing of the intended
n = (n+1) % size;
as deduced from the surrounding code and runtime-proved. (The latter now replaces the former.)
But since…
Wolf
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votes
2 answers
PayPal Payflow Pro (Legacy) Implementation
Is there anyone that has successfully implement Payflow Pro in PHP?
A client has forced me to use the Payflow Pro (Legacy) on the website, and it seems PayPal has removed the documentations for it. Link here
I only need the documentation of how this…
AlbertSamuel
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- 33
-1
votes
2 answers
Plain HTTP along with WCF - how?
The brand-new WCF-based code needs (in the meanwhile) to provide a service to a legacy code that works in plain HTTP. So that, along with new SOAPed requests, I need to tailor some oldskul-style communication (on a different port): to be able to…
BreakPhreak
- 10,940
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-1
votes
1 answer
$$ in perl subroutine definition
This could be a duplicate question.
I know perl doesn't restrict users on no of arguments and their types.
But what does $,$$ and ; stands for in below code.
sub run($$;$) {
my ( $x, $y, $z ) = @_;
....
}
Bharat Pahalwani
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votes
2 answers
Method for ensuring GUI app runs regardless of user login post-XP
I had a really hard time thinking of an appropriate title for this question, if you can think of something better after reading feel free to change it.
I have some legacy code that was built to run on XP, and I only recently realized while reading…
eddie_cat
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-1
votes
1 answer
My script works with current jquery 1.11.1 , but not with 1.7.1. Why?
// selectbox
$(function() {
function selectbox(widgetSelector, optionsContainerSelector, optionsSelector, selectedOptionSelector, selectedOptionClassName, selectorClassName) {
var target = widgetSelector;
function…
NicholasAbrams
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- 8
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votes
1 answer
How does the memory layout look like when a double pointer is assigned to a single pointer?
I am currently working on a legacy code (still proprietary, so we'll have to make do with an MRE instead; and by legacy I mean code written in 1991). This is what I've come across:
#include
void foo(void*& ptr2) {
// whatever
…
justanotherguy
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votes
1 answer
Load Legacy PrestaShop classes from deploy.php file
From deploy.php file in the root of my Prestashop project I call a method
ModuleManagerBuilder::getInstance();
that in turn calls other Legacy Prestashop classes like Configuration
This throw an error:
[Error] Class 'Configuration' not…
Giacomo Secchi
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votes
1 answer
should I avoid static method as it's hard for testing?
I read the book Working effectivly with Legacy code.
I understand the technics to break dependencies in Legacy code
But I want to understand how to avoid these dependencies for the first time:
1- Regarding static methods:
I understand Introduce…
Elad Benda
- 35,076
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votes
4 answers
What is this Swift ternary operator? A == B ? C : D
I inherited an iOS app that is crashing at this line (unexpected nil). What is your best interpretation of what is going on here?
indexPath.row.number == selectedItem ? cell.deselectStyle() : cell.dedeselectStyle()
The cell.deselectStyle() and…
Nils Guillermin
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