I have checked every where, and read countless article. I even went on some Chinese forum looking for answers. The thing is i can't fully understand c# memento pattern. Different articles show different ways on doing it, i cant understand it properly. Most of the articles only show simple stuff like string memento. I am trying to understand how to do a undo function and need help and also, how can you do a undo function on a public partial class?, i just need a small example showing public partial class memento. Thanks in advance.
1
There are 1 best solutions below
Related Questions in C#
- Delay in loading Html Page(WebView) from assets folder in real android device
- Why does a function show up as not defined
- CSS Class is not applying to element (border width,color,and style attributes)
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- Automatically closing tags in form input?
- Positioning child at bottom of parent with scroll
- Remove added set of rows
- Website zoomed out on Android default browser
- Twitter Bootstrap horizontal form elements on a line
Related Questions in UNDO
- Delay in loading Html Page(WebView) from assets folder in real android device
- Why does a function show up as not defined
- CSS Class is not applying to element (border width,color,and style attributes)
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- Automatically closing tags in form input?
- Positioning child at bottom of parent with scroll
- Remove added set of rows
- Website zoomed out on Android default browser
- Twitter Bootstrap horizontal form elements on a line
Related Questions in MEMENTO
- Delay in loading Html Page(WebView) from assets folder in real android device
- Why does a function show up as not defined
- CSS Class is not applying to element (border width,color,and style attributes)
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- Automatically closing tags in form input?
- Positioning child at bottom of parent with scroll
- Remove added set of rows
- Website zoomed out on Android default browser
- Twitter Bootstrap horizontal form elements on a line
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Basically, a memento is a way of saving and restoring an object's state. But it goes a bit beyond that: it's a way of preserving encapsulation. So if the object whose state you want to save has some private members, the memento pattern is a way of being able to access those members in a limited way.
For an example, let's say we have a 2D character doing a drunken walk around a map:
Let's say we don't want to expose x and y as public members, but we want to be able to save the object's state. Then we can create a memento class that encapsulates the object's state:
The Sprite class can accept a memento object to restore its state, and provide one to save:
Now, let's say we have another class that is controlling the run. We can now have this class provide an "undo" feature:
As far as a partial class, there is really no difference -- just tack on "partial" to the Sprite class above, and the memento pattern is still intact.
Reference: Memento Design Pattern