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*.h or *.hpp for your class definitions
I've always used a *.h file for my class definitions, but after reading some boost library code, I realised they all use *.hpp . I've always had an aversion to that file extension, I think mainly because I'm not used to it.
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How can I get last characters of a string
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EDIT: As others have pointed out, use slice(-5) instead of substr. However, see the .split().pop() solution at the bottom of this answer for another approach.
Original answer:
You'll want to use the Javascript string method ....
Return None if Dictionary key is not available
I need a way to get a dictionary value if its key exists, or simply return None , if it does not.
11 Answers
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What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
...euse instances of common strings instead of creating multiple instances of it.
As an interesting side note, string interning is an example of the flyweight design pattern:
Flyweight is a software design
pattern. A flyweight is an object that
minimizes memory use by sharing as
much data as...
How to delete or add column in SQLITE?
I want to delete or add column in sqlite database
19 Answers
19
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What does the C++ standard state the size of int, long type to be?
...or detailed information regarding the size of basic C++ types.
I know that it depends on the architecture (16 bits, 32 bits, 64 bits) and the compiler.
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Can't access object property, even though it shows up in a console log
...e the output from these two logs. The first clearly shows the full object with the property I'm trying to access, but on the very next line of code, I can't access it with config.col_id_3 (see the "undefined" in the screenshot?). Can anyone explain this? I can get access to every other property ex...
Git: fatal: Pathspec is in submodule
I'm trying to get TravisCI to automatically deploy my Hakyll static site, according to this guide .
5 Answers
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@selector() in Swift?
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Swift itself doesn't use selectors — several design patterns that in Objective-C make use of selectors work differently in Swift. (For example, use optional chaining on protocol types or is/as tests instead of respondsToSelector:...
Rails 4 multiple image or file upload using carrierwave
...ate uploader Avatar
Create post scaffold
rails generate scaffold post title:string
Create post_attachment scaffold
rails generate scaffold post_attachment post_id:integer avatar:string
rake db:migrate
In post.rb
class Post < ActiveRecord::Base
has_many :post_attachments
accepts_n...