大约有 6,000 项符合查询结果（耗时：0.0131秒） [XML]
标签内容过多，如何做到可上下滑动？ - App应用开发 - 清泛IT社区，为创新赋能！
...条，不能上下滑动，看不到上面已经隐藏的内容，那么该如何让其可滚动呢？
其实很简单：
垂直滚动布局就是为了解决区域显示不下，想要出现滚动操作的场景。
套上这个布局，搞定！
电脑上的文件如何拷贝到模拟器中？ - App应用开发 - 清泛IT社区，为创新赋能！
Q：电脑上的文件如何拷贝到模拟器中？ A：文件拷贝的具体步骤如下（这里以mumu模拟器为例展示，其他的模拟器也都是大同小异）：模拟器菜单，文件传输功能：打开模拟器与电脑的共享目录：将想要传输的文件拷贝到共享目...
AppInventor2 文本和数字如何转换？ - App应用开发 - 清泛IT社区，为创新赋能！
Q：AppInventor2 文本和数字如何转换？
A：先来一个文本转数字的情况：
定义一个变量赋初值 数字0，然后将文本设置给它，事实证明这时它自动变成了文本类型，而不再是数字。因此此方案行不通。
最彻底的方案：
[hide]
直...
Notepad++ htmltidy - unable to find libtidy.dll
... answered Sep 18 '12 at 1:41
uınbɐɥsuınbɐɥs
6,69055 gold badges2323 silver badges4242 bronze badges
...
How to get first element in a list of tuples?
...)/iterations
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = [i[0] for i in a]''', number=iterations)/iterations - init_time)
print(timeit.timeit('''a = [(i, u'abc') for i in range(1000)]\nb = list(zip(*a))[0]''', number=iterations)/iterations - init_time)
output
3.491014136001...
Access multiple elements of list knowing their index
...ve supplied answers:
def numpyIndexValues(a, b):
na = np.array(a)
nb = np.array(b)
out = list(na[nb])
return out
def mapIndexValues(a, b):
out = map(a.__getitem__, b)
return list(out)
def getIndexValues(a, b):
out = operator.itemgetter(*b)(a)
return out
def python...
Numpy first occurrence of value greater than existing value
...on using numba
A more general approach would be using a numba function:
@nb.njit
def first_index_numba(val, arr):
for idx in range(len(arr)):
if arr[idx] > val:
return idx
return -1
That will work for any array but it has to iterate over the array, so in the averag...
Cluster analysis in R: determine the optimal number of clusters
...nd-diagnostics-for-cluster-analysis-r-code/ for more details.
Eight. The NbClust package provides 30 indices to determine the number of clusters in a dataset.
library(NbClust)
nb <- NbClust(d, diss=NULL, distance = "euclidean",
method = "kmeans", min.nc=2, max.nc=15,
index = "...
Unable to install Maven on Windows: “JAVA_HOME is set to an invalid directory”
...\jdk\bin", then the JAVA_HOME variable needs to point to "E:\Sun\SDK\jdk".
NB: JAVA_HOME should NOT end with "\bin"1.
Make sure that you haven't put a semicolon in the JAVA_HOME variable2.
NB: JAVA_HOME should be a single directory name, not "PATH-like" list of directory names separated by semicolo...
Determine a string's encoding in C#
...= 'A' && b[n] <= 'Z')))
{ n++; }
byte[] nb = new byte[n-oldn];
Array.Copy(b, oldn, nb, 0, n-oldn);
try {
string internalEnc = Encoding.ASCII.GetString(nb);
text = Encoding.GetEncoding(internalEnc).GetString(b)...