大约有 36,010 项符合查询结果（耗时：0.0504秒） [XML]
On logout, clear Activity history stack, preventing “back” button from opening logged-in-only Activi
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Does this work if an activity somewhere in the stack was shut down by the OS to recover memory? Ie. will the system consider it really finished after the broadcast above is sent, and will not recreate it on hitting the back b...
How to upgrade all Python packages with pip?
...ions for this. I'm trying to keep this answer short and simple, but please do suggest variations in the comments!
In older version of pip, you can use this instead:
pip freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -U
The grep is to skip editable ("-e") package definit...
How to remove focus without setting focus to another control?
...layout). To remove focus from all Buttons/EditTexts etc, you can then just do
LinearLayout myLayout = (LinearLayout) activity.findViewById(R.id.my_layout);
myLayout.requestFocus();
Requesting focus did nothing unless I set the view to be focusable.
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How can I check for “undefined” in JavaScript? [duplicate]
...t initialized. Use the in operator for a more robust check.
"theFu" in window; // true
"theFoo" in window; // false
If you are interested in knowing whether the variable hasn't been declared or has the value undefined, then use the typeof operator, which is guaranteed to return a string:
if (typ...
What is the difference between `new Object()` and object literal notation?
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They both do the same thing (unless someone's done something unusual), other than that your second one creates an object and adds a property to it. But literal notation takes less space in the source code. It's clearly recognizable as...
How to clear basic authentication details in chrome
...ername@" part in the URL, but still keep it. If you re-enter the URL after doing this (without the @ part), it will stop asking. Just a tip!
– Mike Caron
Sep 1 '12 at 2:48
4
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CMake output/build directory
...:
cd src
rm CMakeCache.txt
cd ..
Then remove all the set() commands and do:
cd Compile
rm -rf *
cmake ../src
As long as you're outside of the source directory when running CMake, it will not modify the source directory unless your CMakeList explicitly tells it to.
Once you have this working, ...
Upload files with HTTPWebrequest (multipart/form-data)
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i have tried this code but it doesnt upload jpeg files and it doesnt get any error? how is this possible.
– Orhan Cinar
Mar 28 '11 at 11:37
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What is a magic number, and why is it bad? [closed]
...lic class Foo {
public void setPassword(String password) {
// don't do this
if (password.length() > 7) {
throw new InvalidArgumentException("password");
}
}
}
This should be refactored to:
public class Foo {
public static final int MAX_PASSW...
How to add an extra column to a NumPy array
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I think a more straightforward solution and faster to boot is to do the following:
import numpy as np
N = 10
a = np.random.rand(N,N)
b = np.zeros((N,N+1))
b[:,:-1] = a
And timings:
In [23]: N = 10
In [24]: a = np.random.rand(N,N)
In [25]: %timeit b = np.hstack((a,np.zeros((a.shape[0]...