methods

问题 I'm taking on a programming challenge for practice and I'm having trouble figuring this one out. It might be due to the time and my current sleepiness, but I want to get this done before bed. I want to sort the values of each element of an array in ascending order. The trick is not to use a sort() method. Here is what I have so far: for (int i = 0; i < freq_array.Length; i++) { for (int n = 1; n < i; n++) { if (freq_array[n] < freq_array[i]) freq_array[i] = freq_array[n]; } } for (int x = 0;

问题 I have two different activities. The first calls the menu(base) if the user is logged in, but have also the method for display the user information. public class MainActivity extends ActionBarActivity implements View.OnClickListener { UserLocalStore userLocalStore; EditText etName, etAge, etUsername; Button bLogout; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); etUsername = (EditText) findViewById(R

问题 Ok, so in my program I tried making buttons and assigning different methods for each button pressed. But I came into a problem where I also want the user to use his keyboard and assign buttons pressed on keyboard into same buttons on screen. Yet firstly, I tried if button is pressed by mouse or keyboard yet the method doesn't allow KeyEvents in 'EventArgs' (which is fine by me), so I created different method and made a boolean variable so that if in that separate method the key is pressed,

问题 I am adding a URL handler to a Flask application using add_url_rule. It requires a function as a handler (not a method). However, for proper encapsulation, my intended function is a bound method that uses the self variable. Is there any way I can somehow make Flask see my function: def action(self, param) as def action(param) ? class A(): def __init__(self): self._localvar = 5 self._flask = Flask("testapp") def add_rules(self): self._flask.add_url_rule("/","root",????) def action(self, value)

问题 I can define a S3 method like this : `+.data.frame` <- function(e1,e2){"hello"} iris + iris # [1] "hello" But this won't work if e2 is a gg object : iris + geom_point() Error in iris + geom_point() : non-numeric argument to binary operator In addition: Warning message: Incompatible methods ("+.data.frame", "+.gg") for "+" I think it has something to do with S4 methods but I'm confused. Can you explain what's at play and how to sort it out ? desired output : iris + geom_point() # [1] "hello"

问题 To generate a random int between 0 and 10 in Python, I could do any of the following: import numpy as np print(np.random.randint(0, 10)) or import random print(random.randint(0, 10)) How do these two methods differ, computationally? 回答1: It's important to note that these function are not equivalent. In numpy, the range is [low, high) , and in the Python random [low, high] . Speed It seems that the numpy implementation is the fastest: In [1]: import numpy as np In [2]: %timeit np.random

问题 To generate a random int between 0 and 10 in Python, I could do any of the following: import numpy as np print(np.random.randint(0, 10)) or import random print(random.randint(0, 10)) How do these two methods differ, computationally? 回答1: It's important to note that these function are not equivalent. In numpy, the range is [low, high) , and in the Python random [low, high] . Speed It seems that the numpy implementation is the fastest: In [1]: import numpy as np In [2]: %timeit np.random

问题 So out of nowhere I seemingly cannot autocomplete methods using . + Tab in Jupyter Notebook. Currently running Jupyter 6.0.1 I've tried the following with no success: $ sudo easy_install readline conda install -c anaconda jedi & updated conda and the following pip install pyreadline thanks! 来源： https://stackoverflow.com/questions/60066265/tab-autocomplete-not-working-in-jupyter-notebook

问题 I want to be able to set any label's visibility to true or false with a method. I have this code: private void Change_Visible(Label toBeChanged) { if (toBeChanged.Visible == false) { toBeChanged.Visible = true; } else { toBeChanged.Visible = false; } toBeChanged.Refresh(); } I call to this code with: Change_Visible(myLabel); // // Do other things // Change_Visible(myLabel); In my specific example, myLabel is set to not be visible at the load of my form. After the first call to Change_Visible

问题 i have 3 zone shipping and every zone have 3 more method shipping (diffrent) Zone US : Method Shipping = 1. Flate_rate1, 2. Flate_rate2, 3. Flate_rate3 Zone UK : Method Shipping = 1. Flate_rate4, 2. Flate_rate5, 3. Flate_rate6 Zone All WOrld : Method Shipping = 1. Flate_rate7, 2. Flate_rate8 now iwant to display method shipping by zone when select billing country with ajax. example : if select billing country US then only display/showing method shipping by zone us (1. Flate_rate1, 2. Flate