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how to mark True as true, False as false using Gson?


how to mark True as true, False as false using Gson?

By : Simon Major
Date : November 19 2020, 01:01 AM
like below fixes the issue You are doing it wrong. If your json string is the way you have given they you need to create another model class with user object and give it's class while serializing. Or do as I have done in following code. True or true does not matter.
code :
public class HelloWorld {

    public static void main(String args[]) {

        String json = "{'id': 1,'name': 'Abc','isOnline': True}";
        User user = new Gson().fromJson(json, User.class);
        System.out.println(user);
    }

}

class User {

    private String id;
    private String name;
    private boolean isOnline;

    @Override
    public String toString() {
        return "User [id=" + id + ", name=" + name + ", isOnline=" + isOnline
                + "]";
    }
}
User [id=1, name=Abc, isOnline=true]
System.out.println(Boolean.parseBoolean("true"));
System.out.println(Boolean.parseBoolean("True"));


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Give an O(N) algorithm to rearrange a list of true/false so that all false elements precede the true

Give an O(N) algorithm to rearrange a list of true/false so that all false elements precede the true


By : Frank Peng
Date : March 29 2020, 07:55 AM
wish helps you Keep an index (lastFalseIdx) where to insert a False element. So, initially it is 0. Traverse the array from left to right, and if False found, swap it with element at lastFalseIdx, and increment the index.
Python (almost pseudo-code):
code :
arr = [True, True, False, False, False, True]

print arr

lastFalseIdx = 0

for idx, val in enumerate(arr):
    if val == False:
        arr[lastFalseIdx], arr[idx] = arr[idx], arr[lastFalseIdx]   # swap elements
        lastFalseIdx = lastFalseIdx + 1

print arr
In Gson, how can you limit booleans to true and false (not TrUe and fAlSe)?

In Gson, how can you limit booleans to true and false (not TrUe and fAlSe)?


By : Bunn
Date : March 29 2020, 07:55 AM
I hope this helps you . A small summary of the comments section.
The JsonReader use a integer value to get the adapter to use to get the value corresponding. In the case of an unquoted value, the methods private int peekKeyword() will check the first character like this :
code :
if(c == 't' || c == 'T') -> BOOLEAN
if(c == 'f' || c == 'F') -> BOOLEAN
if(c == 'n' || c == 'N') -> NULL
Why does True == True evaluate to True, when {a statement that's equal to True} == True evaluates to false?

Why does True == True evaluate to True, when {a statement that's equal to True} == True evaluates to false?


By : user7841439
Date : March 29 2020, 07:55 AM
I wish did fix the issue. I'm having trouble explaining the contents of this script in Python3: , You need to use parentheses:
code :
(y in x) == True # evaluates to True
a OP1 b OP2 c
a OP1 b and b OP2 c
y in x == True
y in x and x == True
True and False
How can I check if a flag is either false/true and then to decide if to enable false/true a button in OnGUI?

How can I check if a flag is either false/true and then to decide if to enable false/true a button in OnGUI?


By : Hnin Hnin
Date : March 29 2020, 07:55 AM
This might help you You can make the drawing of the Button depend on wasUndo. But actually you don't need a global variable for that. I just used showButton .. if you want you can stick to your wasUndo anyway just using it the same way
code :
private void OnGUI
{
    var file = @"d:\json\json.txt";
    FileInfo fi = new FileInfo(file);

    // By default asume you don't want to show the button
    // it will than only be enabled if the later conditions match
    bool showButton = false;

    // you can check this already here not in the loop
    // if no file -> nothing to do
    if(!File.Exists(@"d:\json\json.txt") || fi.Length <= 0) return;


    // This is only reached if the file exists and is not empty

    // check for null transforms
    for (int i = 0; i < tempTransformSelection.Count(); i++)
    {
        // if not null do nothing
        if(tempTransformSelection[i] != null) continue;

        // otherwise enable the button and leave the loop
        showButton = true;
        break;
    }

    // if not true then button won't be shown
    if(!showButton ) return;

    if (GUILayout.Button("Undo last"))
    {
        TransformSaver.LoadTransform();
        showButton = false;
    }
}
if(!showButton) return;

...
EditorGUI.BeginDisabledGroup(!showButton);

if(GUILayout.Button("..."){ //... }

EditorGUI.EndDisabledGroup();
`python3` define a function when `list[True, True, True]`, return `False` when there exist `False` in the list

`python3` define a function when `list[True, True, True]`, return `False` when there exist `False` in the list


By : user2669053
Date : March 29 2020, 07:55 AM
Hope this helps Define a function that returns:
code :
True
False
False
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