Should you avoid adding unecessary stack frames?
I have been working with laravel (PHP) recently, and there is an option when using their fluent ORM to define where clauses using closures. This gives us two, functionally equivalent, ways to specify a where clause that should only be added in certain cases:
How to approach program design with respect to data strucutres and algorimths – is there an equivelant of the OO design process for d.s.’s + algs? [closed]
Closed 9 years ago.
What is more efficient, a single square root or multiple divisions?
Say I make a program that calculates all possible (integral) factors of a certain number that has been input.
Is it theoretically more efficient to check with all integers up to the square root of the number or till half of the number.
Calculating the square root will take more time and power but will result in fewer divisions and vice-versa for the other option.
What is more efficient, a single square root or multiple divisions?
Say I make a program that calculates all possible (integral) factors of a certain number that has been input.
Is it theoretically more efficient to check with all integers up to the square root of the number or till half of the number.
Calculating the square root will take more time and power but will result in fewer divisions and vice-versa for the other option.
What is more efficient, a single square root or multiple divisions?
Say I make a program that calculates all possible (integral) factors of a certain number that has been input.
Is it theoretically more efficient to check with all integers up to the square root of the number or till half of the number.
Calculating the square root will take more time and power but will result in fewer divisions and vice-versa for the other option.
What is more efficient, a single square root or multiple divisions?
Say I make a program that calculates all possible (integral) factors of a certain number that has been input.
Is it theoretically more efficient to check with all integers up to the square root of the number or till half of the number.
Calculating the square root will take more time and power but will result in fewer divisions and vice-versa for the other option.
Using action array vs Switch Case [closed]
Closed 9 years ago.
How do I efficiently send notifications for different events to different users based on their preferences?
I’m creating a notification system for particular events.
Should I do a different SQL table for user privacy settings or just keep it at the users table?
So I am developing a Web Application and I have some concerns about the database. I use a lot of boolean settings at the user table with the form privacy_allow_1, privacy_allow_that, privacy_allow_this etc etc.
Efficiency of C# dictionaries
C# dictionaries are a simple way to find if something exists etc etc. I have a question though on how they work. Let’s say instead of a dictionary I use an ArrayList. Instead of using ContainsKey (or an equivalent method in another language) I loop through the ArrayList to check if something exists there (or performing binary search if data is sorted or something similar). What’s the difference in efficiency? Is the ContainsKey method using some more efficient way rather than looping through the keys and check if what I am searching exists?