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Questions tagged [magic-numbers]

Magic numbers are unexplained values that often should be replaced with a named constant.

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Getting rid of magic numbers in Java

How do I get rid of magic numbers in java without declaring a massive amount of finals or static finals? Keep in mind looping, arrays are not allowed. It doesn't seem possible? Help appreciated. thanks. Example code: drawOval(5, 5, width,…
Larry21
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Checking "Magic Bytes" or Mime Types in PHP?

So, I've currently used a few different methods to check the mime type. The user uploads a file using a form, I grab the mime type, if it's application/zip, I allow it, if it's anything else, I deny it. The issue is that something (browsers I…
user2376223
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Can a GDBM database created in C be opened in Python?

I have a Python program in which I am trying to use this rhyming dictionary to look up rhymes. Part of the dictionary library setup works by a C program creating three gdbm .db files. The code that does this is publicly available here (from 'get…
Bill Cheatham
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How to identify the file type even though the file-extension has been changed?

Files are categorized by file-extension. So my question is, how to identify the file type even the file extension has been changed. For example, i have a video file with name myVideo.mp4, i have changed it to myVideo.txt. So if i double-click it,…
Maximin
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Solution for Magic Number issue......?

Consider the following code segment... public static UserStatus getEnum(int code) { switch (code) { case 0: return PENDING; case 1: return ACTIVE; case 2: return SUSPENDED; …
Ruchira Gayan Ranaweera
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Xcode/Clang magic numbers?

I'm using Xcode with Clang as the compiler, and I'm currently getting an EXC_BAD_ACCESS when calling a function on a pointer whose address is 0xCDCDCDCD. I've also seen some variables set to 0xABABABAB around. I've looked around and noticed that…
benwad
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"Magic Number" exercise in java

So my assignment is to find all the "magic numbers" within a range of numbers (input by the user). A magic number is a number whose factors (except itself) sums up to that number. So 6 would be a magic number because it's factors besides itself are…
biohax2015
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BlackBerry - Problem with GZip decompression

There is a strange problem I've run in using RIM compression API, I can't make it work as it's described in documentation. If I gzip plain text file using win gzip tool, add gz to resources of blackberry project and in app try to decompress it,…
Maksym Gontar
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When are numbers NOT Magic?

I have a function like this: float_as_thousands_str_with_precision(value, precision) If I use it like this: float_as_thousands_str_with_precision(volts, 1) float_as_thousands_str_with_precision(amps, 2) float_as_thousands_str_with_precision(watts,…
theanine
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python compiled bytecode `.pyc` not compatible with every versions. can we make it general? How to remove python magic number error?

I have compiled this visible_code.py file into .pyc compiled byte code file, then I am running the function fun from .pyc file. # visible_code.py def fun(): print("Hello") # convet to bytecode import…
Visrut
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Should I declare a number as constant if it is passed as a parameter to a meaningful named function?

Suppose we a validation code similar to the following: Rule(account => account.CompanyName).MaxLength(50) Or Rule(account => account.Balance).MustBeGreaterThan(0) Do we still call the numbers 50 or 0 a magic number and define a constant for it,…
Kush Grover
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Flutter: how to get magic numbers of file?

I'm using file_picker to choose file from storage and sometimes it doesn't give an extension but I need to know an extension to send it to server side. I'm going to identify it by Magic Number like this print(lookupMimeType('test.html',…
Zhu
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Using -1 as special value in API functions taking numeric arguments

Consider this example function from a fictive game engine API: function Entity.SetHealth( Number health ) Is it bad to have functions like this accept -1 as parameter, causing, in this case, the entity to become invincible? Should I rather use two…
Frukt
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What is the Byte Order Mark preceding the magic number of this PDF?

I am processing files and use magic numbers to identify file type validity. I am using the Medsea mime-util JAR for Java to investigate the magic number and determine mime. This library accounts for two different PDF sequences it checks from…
JoshDM
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Magic number constant name convention for tests ONE, TWO,.. ONE_HUNDRED vs _1 , _2, _100

so I'm doing some code refactoring/sonar fixes, and there are some tests that contain magic numbers, 5, 123, 567 or whatever, i wanted to create a NumberConstant class where we save numbers used in tests, everything is good we have something like…
user10359550
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