大约有 35,100 项符合查询结果(耗时:0.0444秒) [XML]
+ operator for array in PHP?
...operator returns the right-hand array appended to the left-hand array; for keys that exist in both arrays, the elements from the left-hand array will be used, and the matching elements from the right-hand array will be ignored.
So if you do
$array1 = ['one', 'two', 'foo' => 'bar'];...
Python ValueError: too many values to unpack [duplicate]
...
self.materials is a dict and by default you are iterating over just the keys (which are strings).
Since self.materials has more than two keys*, they can't be unpacked into the tuple "k, m", hence the ValueError exception is raised.
In Python 2.x, to iterate over the keys and the values (the tup...
Why doesn't indexOf work on an array IE8?
The below function works fine on Opera, Firefox and Chrome. However, in IE8 it fails on the if ( allowed.indexOf(ext[1]) == -1) part.
...
What does each of the [y,n,q,a,d,/,K,j,J,g,e,?] stand for in context of git -p
...p mode means patch, the help for which is hard-ish to find, but if you check git add --help you'll find the following
patch
This lets you choose one path out of a status like selection. After choosing the path, it presents the diff between the index and the working tree file and asks you ...
How do I activate a virtualenv inside PyCharm's terminal?
...yCharm) and activated that environment as my Interpreter. Everything is working just fine.
22 Answers
...
How to convert a char array back to a string?
... So the need for splitting a String into individual chars and join them back is not required in normal code.
Compare this to C/C++ where "foo" you have a bundle of chars terminated by a zero byte on one side and string on the other side and many conversions between them due do legacy methods.
...
Get string character by index - Java
I know how to work out the index of a certain character or number in a string, but is there any predefined method I can use to give me the character at the nth position? So in the string "foo", if I asked for the character with index 0 it would return "f".
...
How to check size of a file using Bash?
I've got a script that checks for 0-size, but I thought there must be an easier way to check for file sizes instead. I.e. file.txt is normally 100k; how to make a script check if it is less than 90k (including 0), and make it do wget a new copy because the file is corrupt in this case.
...
Converting integer to string in Python
...
>>> str(10)
'10'
>>> int('10')
10
Links to the documentation:
int()
str()
Conversion to a string is done with the builtin str() function, which basically calls the __str__() method of its parameter.
...
time.sleep — sleeps thread or process?
In Python for *nix, does time.sleep() block the thread or the process?
7 Answers
7
...
