Is there a way to get all declared variables within a class in dart? So what I want to do is get all variables in a list from a class and check each variable if it's null. Any help is appreciated. Thanks.
Related
I know this is very basic thing but i need to know that how can i declare / assign value / use global variables.
because i have already declared variable global here it is :
now i am adding value which is geeting from server response like
now in console i am getting output in that global variable.
now, my problem is when i use that global variables values as param value to call API it will take ZERO. not getting correct value
Thanks for guide
Just remove var keyword from the local variable where you assign values and add below code instead.
global_userid = ["\(oDict["userResult"][0]["user_id"])"]
global_reqid = ["\(oDict["userResult"][0]["request_id"])"]
im wondering if there is way to get class name of object at runtime.
i mean something like this:
here is my very simple script
person=TPerson:new()
And i want in my app (in delphi) get "TPerson"
I tried it with lua debug info but what i know to get is called function "new" but i need to get class "TPerson"
lua_getstack(l,0,PL_Debug);
lua_getfield(l,LUA_GLOBALSINDEX,'f');
lua_getinfo(l,'n',PL_Debug);
nameOfCurrnetFunction:=PL_Debug.name; // here is stored "new"
so is possible to get class name?
thanks
Officially you do not have classes in Lua so the type of your objects would always be table. Of course you are free to implement some function that returns you a custom type-name as a string. Lua-wise it will remain a table tough
I know how we can declare global variable in config file and then access through
Service Locator
Currently I am getting this Global variable in controller with the help of service locator and then pass it to models while creating object.
Question: Is it possible that I can get the Global variable in model directly rather than passing in all the models through controller?
Yes it is possible to get the variable declared in global file into model directly. Instead of declaring it as variable, just define it as constant in the global file so that you can access that variable easily in any models.
define('VAR_NAME',Value);
and access the variable using.
constant('VAR_NAME');
Hope it helps
Thanks
I am using Spyder v2.2.5 IDE for programming python. While debugging my python code using pdb in spyder, the IDE does not show the class instance variable in Variable Explorer. It's getting difficult to check the variable values using print statement every-time.
Is there any way to check the class instance variable values during debugging?
I know this is an old post, but I did find a temporary solution. Every class object has a dictionary associated with it that contains the assigned variables. It is a little annoying, but you can assign a global variable to be equal to that dictionary which can be viewed in Spyder's variable explorer.
import numpy as np
class someClass:
def __init__(self):
self.var1=10 #integer type
self.var2=np.ones((3,3,3)) #numpy array type
self.var3=[np.ones((2,2,4))*i for i in range(5)] #list type (of numpy arrays)
b=someClass()
tempdict=b.__dict__ #Then look at this variable under the Variable explorer
You will need to update tempdict every time you change any of the variables, but this will work.
As a temporary solution until they fix this, I am using local variables inside the method until the very end for debug. Use the same name, but without the "self." in front of it.
Right before the return statement, I assign the local variables to the "self." variable equivalent.
If I need the values of a prior, existing "self." variable during execution , then I assign it to a local variable in the beginning of the method.
After debug phase is complete, you can replace the locals with the proper class attribute.
I've been working with Dart for a few weeks now, and so far so good. I've run into a problem, however, when trying to access variables from a class that's a few levels higher. I'm not sure how best to explain this without an actual sample, so here's a quick example:
http://pastebin.com/r2ru6G2w
To put this as simply as possible:
AClass has a variable named "parameter."
BClass inherits from AClass, also has a constructor parameter (incomingParameter) that is assigned to the "parameter" variable from AClass.
CClass inherits from BClass, also has a constructor parameter (incomingParameter) that is simply passed on to BClass via the super initializer.
DClass inherits from CClass, but does not have any constructor parameter. Instead, I'm trying to pass the "parameter" variables all the way from AClass into the super initializer.
This results in an error, that says "Only static members can be accessed in initializers." Fair enough. Any idea how to get around this?
Thanks for all the help,
MR