Alexis Delvaque adrdra

## Convert .mov or .MP4 to .gif.md

      
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                adrdra
                / Convert .mov or .MP4 to .gif.md
            
            
              Created
              May 4, 2022 15:42
                — forked from SheldonWangRJT/Convert .mov or .MP4 to .gif.md
            
              
                Convert Movie(.mov) file to Gif(.gif) file in one command line in Mac Terminal
              
          
    This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.
Need

Convert .mov/.MP4 to .gif
Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.
This is not limited to developer, anyone has this need can use this method to convert the files.

  
## active_record_objects_autosave.md

      
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                adrdra
                / active_record_objects_autosave.md
            
            
              Created
              May 5, 2017 14:07
                — forked from demisx/active_record_objects_autosave.md
            
              
                When Active Record Child Objects are Autosaved in Rails
              
          
    belongs_to:


Assigning an object to a belongs_to association does not automatically save the object. It does not save the associated object either.

has_one:


When you assign an object to a has_one association, that object is automatically saved (in order to update its foreign key).
In addition, any object being replaced is also automatically saved, because its foreign key will change too
If either of these saves fails due to validation errors, then the assignment statement returns false and the assignment itself is cancelled.
If the parent object (the one declaring the has_one association) is unsaved (that is, new_record? returns true) then the child objects are not saved. They will automatically when the parent object is saved.