大约有 40,000 项符合查询结果(耗时:0.0525秒) [XML]
How do I force detach Screen from another SSH session?
...ays list:
mouseclick Move to the selected line. Available when "mousetrack" is set to on.
space Refresh the list
d Detach that display
D Power detach that display
C-g, enter, or escape Exit the list
share...
How to determine whether an object has a given property in JavaScript
How can I determine whether an object x has a defined property y , regardless of the value of x.y ?
7 Answers
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JavaScript regex multiline flag doesn't work
...
You might add that the /s" modifier sets singleline mode as opposed to multiline mode. +1
– Cerebrus
Jul 1 '09 at 10:02
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Can I redirect the stdout in python into some sort of string buffer?
... using TextIOWrapper:
import sys
from io import TextIOWrapper, BytesIO
# setup the environment
old_stdout = sys.stdout
sys.stdout = TextIOWrapper(BytesIO(), sys.stdout.encoding)
# do something that writes to stdout or stdout.buffer
# get output
sys.stdout.seek(0) # jump to the start
out = s...
Full Screen DialogFragment in Android
...e(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button) findViewById(R.id.show);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
showDialog();
}
});
}
...
How does tuple comparison work in Python?
...nkai -- yes. try: x = tuple([0 for _ in range(n)]) and do the same for y. Setting n=100, 1000, 10,000, and 100,000 and running %timeit x==y gave timing values of .5, 4.6, 43.9, and 443 microseconds respectively, which is about as close to O(n) as you can practically get.
– Mi...
NumPy array initialization (fill with identical values)
I need to create a NumPy array of length n , each element of which is v .
7 Answers
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Programmer-friendly search engine? [closed]
...find a smart way of indexing only "programming-related" pages, than we are set: I be
How can I make space between two buttons in same div?
...k for responsiveness. If you really want to prevent it from breaking, then set flex-wrap: nowrap for btn-toolbar in Bootstrap 4 or try with a combination of overflow and white-space for older Bootstrap versions.
– Miroslav Popovic
Mar 5 '18 at 13:17
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Count number of occurences for each unique value
... is a good way to go, as Chase suggested.
If you are analyzing a large dataset, an alternative way is to use .N function in datatable package.
Make sure you installed the data table package by
install.packages("data.table")
Code:
# Import the data.table package
library(data.table)
# Generate ...
