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Write down exactly what your function does

Don’t hesitate to write long function names to have a clean code: write “getProductById”, “sendEmailToUsersWhoHaveNotConfirmedYet”, “getSortedListOfKeywordsForProduct”...

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Append types and/or units for your variables

The names of your variables should reflect what they contain and how it can be used; if the name itself isn’t unambiguous, add a suffix to fully explain what’s in there.

You should prefer suffixes because the first letters of your variables should contains the specifics of the variable in order to use your fav IDE autocompletion.

For example, use “keyword” for a string, “keywords” or “keywordsList” for a list of strings (instead of “k”, “listKeywords”...). You can write “quantity” because it’s obviously a positive integer, but you should write “angleInDegrees” instead of “angle”.

Maximum 2 arguments per method

Except some peculiar cases, you should’t have more than 2 defined parameters for each of your functions; this should improve the legibility and usability of your code, as well as simplify tests.

Nested conditional statements - the hard way

switch (false) case condition1: manageErrorWithCondition1NotVerified(); break; case condition2: manageErrorWithCondition2NotVerified(); break; case condition3: manageErrorWithCondition3NotVerified(); break; ... default: codeWhenAllConditionsAreVerified();

#programming tips #nested #conditional statements #error

Don’t nest loops and conditional statements more than once

If you have more than 2 levels of indenting, your code starts to become hard to read. You should use refactoring to make smaller portions of code.

#programming tips #nested #loop #conditional statement #if

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Use constants names instead of static values

Replace:

if (time > 3600)

with:

if (time > AN_HOUR_IN_SECONDS)

#programming tips #constant #value

Replace comments with code

Replace:

// Do something command1 command2 command3

with:

doSomething()

#programming tips #comment

Nested if

if (!condition1) manageError() break_or_return

block1

if (!condition2) manageError() break_or_return

block2

if (!condition3)...

#nested #conditional statements #programming tips

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