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Questions tagged [order]

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2answers
959 views

Maintaining order of events with multiple consumers in a typical pub sub scenario

I am using Kafka. I am developing a simple e-commerce solution. I have a non-scalable catalog admin portal where products, categories, attributes, variants of products, channels, etc are updated. For ...
-2
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1answer
61 views

What should be the correct architecture in an e-commerce module

I'm new in development & just developing an e-commerce platform. I'm just confuse about the flow of payment. Suppose I have a checkout page where after logged in user has to press the payment ...
5
votes
4answers
471 views

Should you unit test order of operations? If so, how?

Imagine a psedo-code class like this which does name comparisons: public class NameComparer { public bool DoNamesMatch(Name name1, Name name2) { if(WholeNameMatch(name1, name2)) ...
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1answer
59 views

How to manage stock before to the shipping?

I have a problem with the handling of an order once it has been confirmed and has already been shipped to customers. Suppose our initial order is as follows, and we don't know which customers will ...
0
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5answers
2k views

Do you create an order before or after payment on an Ecommerce site?

I have a shopping cart with a checkout page. On the checkout page is a payment button which takes them to a stripe payment form. I've read some books on building eCommerce shopping carts in which ...
-2
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1answer
60 views

Name for object to re-order events received in arbitrary order?

I have a program which generates events. They are ordered with a Lamport clock and sent over the network. They may arrive in a different order. On the receiving end I have an object which re-orders ...
1
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2answers
780 views

Binary Search O(log(n)) or O(n)

I see where most readings online derive that the Big-Oh notation of a Binary Search is O(log(n)), but doesn't this assume a balanced tree? What if the tree is completely unbalanced (i.e. similar to a ...
4
votes
1answer
2k views

Maintain ordered collection by updating as few `order` fields as possible

I'm working on integrating a reorderable lists UI widget with a Meteor.js (MongoDB, in effect) collection: { order: ???, // what type to use here? property1: ..., ... propertyN: ... } Each ...
1
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4answers
3k views

Order by different Enum property each row

So I have a list of DefaultSearchModal items that have an enum called TypeSearch in every list item. I would like to order the list to have a different enum property each row. So if you have an ...
3
votes
4answers
1k views

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 ...
2
votes
1answer
105 views

Which layer should order the columns shown to the user when using MVC?

Say you want to render a table with five columns, but you want the order of the columns to be different depending on some specific parameter. This would be very easy to accomplish if the model sets ...
1
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4answers
793 views

Checking for minimum number of command-line arguments, but allowing help switch

I just ran into an odd scenario. I’m sure that I must have run into the same situation in the past and yet somehow not noticed it until now. I am writing a program that requires at least two command-...
9
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2answers
2k views

What is the justification for Python's power operator associating to the right?

I am writing code to parse mathematical expression strings, and noticed that the order in which chained power operators are evaluated in Python differs from the order in Excel. From http://docs....
1
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3answers
825 views

Implicitly or explicitly sorted elements?

So, I've got the following problem: I have a number of ordered elements, ordered in the following way: Type 1: Must be the first element. (only one possible, always present) Type 2: Must be the ...
8
votes
3answers
7k views

Ordered enumeration: IEnumerable or Array (in C#)?

Typical context: I make an extension method for a collection which considers that the elements are ordered. The function starts at the beginning, at index 0, and the order has significance. Examples: ...
1
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3answers
382 views

Is an assocative array ordered?

An associative array has many common similar names, hash, keymap, map, table, index. It's a map of keys and values but I cannot find a reputable definition of the phrase which tells me whether a map ...
52
votes
14answers
23k views

What is best practice on ordering parameters in a function?

Sometimes (rarely), it seems that creating a function that takes a decent amount of parameters is the best route. However, when I do, I feel like I'm often choosing the ordering of the parameters at ...