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Real world use cases of bitwise operators [closed]
...ut a second time will undo the first. Older GUIs used to rely on this for selection highlighting and other overlays, in order to eliminate the need for costly redraws. They're still useful in slow graphics protocols (i.e. remote desktop).
Those were just the first few examples I came up with - t...
iOS 7 - Status bar overlaps the view
... worked for me. Notice that in order to see this deltas, you have to deselect 'Use Autolayout' under 'Identity and Type' for storyboard.
– marsant
Oct 3 '13 at 22:12
2
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Getting attributes of Enum's value
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This is a generic implementation using a lambda for the selection
public static Expected GetAttributeValue<T, Expected>(this Enum enumeration, Func<T, Expected> expression)
where T : Attribute
{
T attribute =
enumeration
.GetType()
.GetMe...
“The file ”MyApp.app“ couldn't be opened because you don't have permission to view it” when running
...ile adding library (manually copy).
So that Xcode is getting confused for selecting correct Info.plist.
I just removed that Info.plist from the added library.
Then it is working fine without any permission alert.
...
Undo git update-index --assume-unchanged
...will print all files with their status
grep '^[a-z]' will filter files and select only assume unchanged
cut -c 3- will remove status and leave only paths, cutting from the 3-rd character to the end
tr '\012' '\000' will replace end of line character (\012) to zero character (\000)
xargs -0 git updat...
Android: Access child views from a ListView
...
I've tried this, for doing selections. It usually works but there are off-by-one errors sometimes and it isn't reliable. I wouldn't recommend it.
– Timmmm
Sep 18 '12 at 12:13
...
What is the proper way to display the full InnerException?
...s()
.Where(e => !String.IsNullOrWhiteSpace(e.Message))
.Select(e => e.Message.Trim());
string flattened = String.Join(Environment.NewLine, messages); // <-- the separator here
return flattened;
}
public static IEnumerable<Exception> GetAllExceptions(this Excep...
How to execute a MySQL command from a shell script?
...
mysql -h <host> -u<user> -p<password> database -e \
"SELECT * FROM blah WHERE foo='bar';"
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pandas: filter rows of DataFrame with operator chaining
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Since version 0.18.1 the .loc method accepts a callable for selection. Together with lambda functions you can create very flexible chainable filters:
import numpy as np
import pandas as pd
df = pd.DataFrame(np.random.randint(0,100,size=(100, 4)), columns=list('ABCD'))
df.loc[lambda ...
How to prevent the activity from loading twice on pressing the button
...
This is the correct approach. It will even handle Button Selected States for you (if you provide them) and all the Material Design “goodies” you’d expect from a simple standard Widget. I can’t believe people use timers for this. Then you start seeing strange libraries to ha...