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How to prevent multiple instances of an Activity when it is launched with different Intents
...at least one other activity underneath it. If this activity calls finish() then the user will see the activity that was underneath. Because of that you can safely assume that the existing instance of the app will be brought to the foreground. If that wasn't the case, you would have multiple instance...
Why not to deploy on a Friday? [closed]
...e for answering questions
It's the end of the week so why would you deploy then?
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Checkboxes in web pages – how to make them bigger?
... Thanks! looks like your code takes more browsers into account then I could ever test with, but it works on everything I've tried. Especially nice on my I-phone, where checkboxes just about become dots! BTW, you can put smaller fractional scaling (like 1.5) in the places where this snipe...
iOS: How to store username/password within an app?
...meworks folder and add existing framework. In Xcode 4 select your project, then select target, go to Build Phases tab and click + under Link Binary With Files) and KeychainItemWrapper .h & .m files into your project, #import the .h file wherever you need to use keychain and then create an instan...
Brew update failed: untracked working tree files would be overwritten by merge
...x)
rm Library/Formula/argp-standalone.rb
rm Library/Formula/cocot.rb
And then do the
git fetch origin
git reset --hard origin/master
brew update
Basically, to explain a bit more:
cd $(brew --prefix)
tells cd to change the directory to whatever brew --prefix will output.
If you try executing...
How to write file if parent folder doesn't exist?
... Use recursive: fs.promises.mkdir(path.dirname(file), {recursive: true}).then(x => fs.promises.writeFile(file, data))
– Offenso
Nov 5 '18 at 18:48
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java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
...e local variables for ResultSets since these are obtained, looped over and then closed typically within the scope of a single function.
There is, however, one exception: If you are using EJBs, or a Servlet/JSP container, you have to follow a strict threading model:
Only the Application Server c...
How to sort Map values by key in Java?
...'s for.
If this map is passed to you and you cannot determine the type, then you can do the following:
SortedSet<String> keys = new TreeSet<>(map.keySet());
for (String key : keys) {
String value = map.get(key);
// do something
}
This will iterate across the map in natural o...
What is the best way to tell if a character is a letter or number in Java without using regexes?
... digit?
If you want to know if a character is a Unicode letter or digit, then use the Character.isLetter and Character.isDigit methods.
If you want to know if a character is an ASCII letter or digit, then the best thing to do is to test by comparing with the character ranges 'a' to 'z', 'A' to 'Z'...
C++, copy set to vector
...zation is incorrect. You create an array of input,size() empty entries and then append the appends after that. I think you mean to use std::vector<double> output; output.reserve(input.size()); std::copy(...);.
– Alexis Wilke
Sep 29 '19 at 10:51
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