大约有 45,000 项符合查询结果（耗时：0.0425秒） [XML]
“R cannot be resolved to a variable”? [duplicate]
In Eclipse, I've created a project from a source and now it shows errors - "R cannot be resolved to a variable". From what I found here, I had cleared and rebuilt the project, but still the R file doesn't appear in the /gen folder.
...
Place cursor at the end of text in EditText
...
Hey @Mullay, I am now handling it by overriding the onSelectionChanged() method of an EditText class: public void onSelectionChanged(int start, int end) { CharSequence text = getText(); if (text != null) { if (start != text.l...
How to express a One-To-Many relationship in Django
I'm defining my Django models right now and I realized that there wasn't a OneToManyField in the model field types. I'm sure there's a way to do this, so I'm not sure what I'm missing. I essentially have something like this:
...
@Override is not allowed when implementing interface method
... this that is using version 2016.2.4 or higher, the menu has changed, it's now Project Structure > Modules > xxx > Language level
– Wesley Smith
Sep 20 '16 at 4:16
...
How to check if AlarmManager already has an alarm set?
When my app starts, I want it to check if a particular alarm (registered via AlarmManager) is already set and running. Results from google seem to indicate that there is no way to do this. Is this still correct? I need to do this check in order to advise the user before any action is taken to create...
How to initialize private static members in C++?
...
The class declaration should be in the header file (Or in the source file if not shared).
File: foo.h
class foo
{
private:
static int i;
};
But the initialization should be in source file.
File: foo.cpp
int foo::i = 0;
If the initialization is in the header file then each file tha...
How to “log in” to a website using Python's Requests module?
...
I know you've found another solution, but for those like me who find this question, looking for the same thing, it can be achieved with requests as follows:
Firstly, as Marcus did, check the source of the login form to get thre...
ReSharper - force curly braces around single line
...be added; if unchecked, braces will be removed.
Note: adding doesn't work now (don't know why - perhaps, too fresh version of ReSharper). However, if you will uncheck the mentioned item, the existent braces around single statements will not be removed.
UPD: The problem solved, see the first two co...
How to find the mysql data directory from command line in windows
...--------+-----------------------------------------------------------+
Or if you want only the data dir use:
mysql -uUSER -p -e 'SHOW VARIABLES WHERE Variable_Name = "datadir"'
These commands work on Windows too, but you need to invert the single and double quotes.
Btw, when executing which mys...
Python Threading String Arguments
...sLine, args=[dRecieved]) # <- 1 element list
processThread.start()
If you notice, from the stack trace: self.__target(*self.__args, **self.__kwargs)
The *self.__args turns your string into a list of characters, passing them to the processLine
function. If you pass it a one element list, it...