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- Dictionaryinitiate
verb
- 1. cause (a process or action) to begin: "he proposes to initiate discussions on planning procedures" Similar Opposite
- 2. admit (someone) into a secret or obscure society or group, typically with a ritual: "she had been formally initiated into the movement" Similar Opposite
noun
- 1. a person who has been initiated into an organization or activity: "an initiate of the cult"
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I'm starting from the pandas DataFrame documentation here: Introduction to data structures I'd like to iteratively fill the DataFrame with values in a time series kind of calculation. I'd like to
Jul 29, 2009 · Declare and define an array. int intArray[] = new int[3]; This will create an array of length 3. As it holds a primitive type, int, all values are set to 0 by default. For example, intArray[2]; // Will return 0 Using box brackets [] before the variable name. int[] intArray = new int[3]; intArray[0] = 1; // Array content is now {1, 0, 0}
One thing to note: all elements in the list will have initially the same id (or memory address). When you change any element later on in the code, this will impact only the specified value, - HOWEVER - if you create a list of custom objects in this way (using the int multiplier) and later on you change any property of the custom object, this will change ALL the objects in the list.
Jul 12, 2011 · One does not define arrays, or any other thing. You can, however, create multidimensional sequences, as the answers here show. Remember that python variables are untyped, but values are strongly typed. –
Mar 20, 2009 · Is it possible to declare a variable in Python, like so?: var so that it initialized to None? It seems like Python allows this, but as soon as you access it, it crashes. Is this possible? If not, ...
In certain other languages (AS3 for example), it has been noted that initializing a new array is faster if done like this var foo = [] rather than var foo = new Array() for reasons of object creati...
Oct 3, 2009 · @AndersonGreen As I said there's no such thing as a variable declaration in Python. You would create a multidimensional list by taking an empty list and putting other lists inside it or, if the dimensions of the list are known at write-time, you could just write it as a literal like this: my_2x2_list = [[a, b], [c, d]].
In many workflows where you want to attach a default / initial value for arbitrary keys, you don't need to hash each key individually ahead of time.
I'm beginning python and I'm trying to use a two-dimensional list, that I initially fill up with the same variable in every place. I came up with this: def initialize_twodlist(foo): twod_list ...
Feb 19, 2015 · I know that the result or any instance created by these two class and the way of getting their instance variable are pretty much the same. But is there any kind of “default” or “hidden” initialization mechanism of Python behind the scene when we don’t define the __init__ function for a class? And why I can’t write the first code in ...
