大约有 45,000 项符合查询结果(耗时:0.0515秒) [XML]
Python set to list
...
Your code does work (tested with cpython 2.4, 2.5, 2.6, 2.7, 3.1 and 3.2):
>>> a = set(["Blah", "Hello"])
>>> a = list(a) # You probably wrote a = list(a()) here or list = set() above
>>> a
['Blah', 'Hello']
Check that you didn't overwrite list by accident:
&...
Numpy how to iterate over columns of array?
Suppose I have and m x n array. I want to pass each column of this array to a function to perform some operation on the entire column. How do I iterate over the columns of the array?
...
equals vs Arrays.equals in Java
...ntents of the arrays.
Similarly array.toString() may not be very useful and you need to use Arrays.toString(array).
share
|
improve this answer
|
follow
|
...
What does f+++++++++ mean in rsync logs?
I'm using rsync to make a backup of my server files, and I have two questions:
4 Answers
...
IntelliJ IDEA JDK configuration on Mac OS
...king me to choose JDK for this project. Anyone know how I can configure it and make it easy to use?
4 Answers
...
JavaScript checking for null vs. undefined and difference between == and ===
...hey're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
// (and `""`, and `0`, and `NaN`, and [of course] `false`)
}
This is defined by ToBoolean in the spec.
...and what is the difference between the null and undefined?
They're both values usually used to i...
Why Func instead of Predicate?
...
While Predicate has been introduced at the same time that List<T> and Array<T>, in .net 2.0, the different Func and Action variants come from .net 3.5.
So those Func predicates are used mainly for consistency in the LINQ operators. As of .net 3.5, about using Func<T> and Action...
What is the EAFP principle in Python?
...mmon Python coding style assumes the existence of valid keys or attributes and catches exceptions if the assumption proves false. This clean and fast style is characterized by the presence of many try and except statements. The technique contrasts with the LBYL style common to many other languages s...
Is it Linq or Lambda?
...ice by allowing you to express your wishes in the manner that you prefer.
And this is a lambda:
x => x.Value == 1
When you choose to use method syntax, LINQ is almost always seen around lambda expressions. But LINQ and lambdas are two totally different things, both of which can be used by the...
What is the difference between MacVim and regular Vim?
...the terminal. Can anyone tell me what differences there are between MacVim and regular Vim?
4 Answers
...