A mapped object type operates on a set of singleton types and produces a new object type where each of those singletons is turned into a property name. For example, this: type Foo = { [K in “hello” | “world”]: string }; would be equivalent to type Foo = { “hello”: string; “world”: string; }; …
I was struggling with the same problem and actually it turns out that a simple change seems to do the trick. I just updated the moduleDirectories field in jest.config.js. Before moduleDirectories: [‘node_modules’] After moduleDirectories: [‘node_modules’, ‘src’]
Use __contains or __icontains (case-insensitive): result = table.objects.filter(string__contains=”pattern”) The SQL equivalent is SELECT … WHERE string LIKE ‘%pattern%’; @Dmitri’s answer below covers patterns like ‘pattern%’ or ‘%pattern’
This way of specifying the encoding of a Python file comes from PEP 0263 – Defining Python Source Code Encodings. It is also recognized by GNU Emacs (see Python Language Reference, 2.1.4 Encoding declarations), though I don’t know if it was the first program to use that syntax.
/** * @param num The number to round * @param precision The number of decimal places to preserve */ function roundUp(num, precision) { precision = Math.pow(10, precision) return Math.ceil(num * precision) / precision } roundUp(192.168, 1) //=> 192.2
x in mylist is better and more readable than x in mylist[:] and your len(x) should be equal to 3. >>> mylist = [[1,2,3],[4,5,6,7],[8,9,10]] >>> for x in mylist: … if len(x)==3: … print x … [1, 2, 3] [8, 9, 10] or if you need more pythonic use list-comprehensions >>> [x for x in …
To get the size/position of a widget on screen, you can use GlobalKey to get its BuildContext to then find the RenderBox of that specific widget, which will contain its global position and rendered size. There is just one thing to be careful of: That context may not exist if the widget is not rendered. …
First, open the file and get all your lines from the file. Then reopen the file in write mode and write your lines back, except for the line you want to delete: with open(“yourfile.txt”, “r”) as f: lines = f.readlines() with open(“yourfile.txt”, “w”) as f: for line in lines: if line.strip(“\n”) != “nickname_to_delete”: f.write(line) You …
def my_func(working_list=None): if working_list is None: working_list = [] # alternative: # working_list = [] if working_list is None else working_list working_list.append(“a”) print(working_list) The docs say you should use None as the default and explicitly test for it in the body of the function.
It seems that the width and height attributes determine the width or height of the canvas’s coordinate system, whereas the CSS properties just determine the size of the box in which it will be shown. This is explained in the HTML specification: The canvas element has two attributes to control the size of the element’s …