大约有 30,000 项符合查询结果（耗时：0.0492秒） [XML]
Android layout replacing a view with another view on run time
...
You could replace any view at any time.
int optionId = someExpression ? R.layout.option1 : R.layout.option2;
View C = findViewById(R.id.C);
ViewGroup parent = (ViewGroup) C.getParent();
int index = parent.indexOfChild(C);
parent.removeView(C);
C = getLayoutInflater().inflat...
Remove duplicated rows using dplyr
... I'm sure there is a simple solution but what if I want to get rid of both duplicate rows? I often work with metadata associated with biological samples and if I have duplicate sample IDs, I often can't be sure sure which row has the correct data. Safest bet is to dump both to avoid erron...
Decorators with parameters?
..., a new function object.
All of foo's metadata is overridden, notably docstring and function name.
>>> print(foo)
<function _pseudo_decor.<locals>.ret_fun at 0x10666a2f0>
functools.wraps gives us a convenient method to "lift" the docstring and name to the returned function....
How can I add (simple) tracing in C#? [closed]
...at was tracing using the TraceSource.TraceEvent(TraceEventType, Int32, String) method where the TraceSource object was initialised with a string making it a 'named source'.
For me the issue was not creating a valid combination of source and switch elements to target this source. Here is an exam...
Calling generic method with a type argument known only at execution time [duplicate]
...pe arguments... Are you trying to call
Method<MyNamespace.Interface<string>>(); // (Or whatever instead of string)
or
Method<MyNamespace.Interface>();
If it's the latter, you only need a call to MakeGenericMethod - not MakeGenericType.
...
Initialise a list to a specific length in Python [duplicate]
...th [['' for i in range(5)] for j in range(5)] instead of >>> card_strings = [['']*5]*5 >>> card_strings[0][0] = "Well that was unexpected..."
– RobotHumans
Sep 19 '15 at 9:18
...
Oracle SQL escape character (for a '&')
...s gets the job done, but is a little clunky when dealing with pre-existing strings.
– aglassman
Sep 5 '13 at 14:43
...
Printing Python version in output
...
import sys
print(sys.version)
This prints the full version information string. If you only want the python version number, then Bastien Léonard's solution is the best. You might want to examine the full string and see if you need it or portions of it.
...
How to create new folder? [duplicate]
...use the local rules of the python installation running the script for path strings. Using os.path.join in all cases assures that your paths will be formed correctly for the platform the script is being run on.
– Alan Leuthard
Jun 13 '17 at 21:12
...
IndexOf function in T-SQL
... an email address column, I need to find the position of the @ sign for substringing.
4 Answers
...