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How to show a confirm message before delete?
... a confirm message on clicking delete (this maybe a button or an image). If the user selects ' Ok ' then delete is done, else if ' Cancel ' is clicked nothing happens.
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How to list all the available keyspaces in Cassandra?
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If you want to do this outside of the cqlsh tool you can query the schema_keyspaces table in the system keyspace. There's also a table called schema_columnfamilies which contains information about all tables.
The DESCRIBE an...
How can I add the sqlite3 module to Python?
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if your python3 is built from source manually , and meet this error, you should install sqlite-devel package first, then rebuild python3.
– ngn999
Mar 28 '16 at 1:28
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How to disable Crashlytics during development
...ys to disable Crashlytics while you are doing your debug builds!
Use a different android:versionString for debug and release builds and then disable crash reporting from the Crashlytics web dashboard for the debug version.
Wrap the call to Crashlytics.start() in an if statement that checks a debu...
How to convert array values to lowercase in PHP?
...ap('nestedLowercase', $yourArray);
function nestedLowercase($value) {
if (is_array($value)) {
return array_map('nestedLowercase', $value);
}
return strtolower($value);
}
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What is the best way to exit a function (which has no return value) in python before the function en
...oes exactly the same as
return None
Your function will also return None if execution reaches the end of the function body without hitting a return statement. Returning nothing is the same as returning None in Python.
sha...
Transferring files over SSH [closed]
...'re saying secure copy ./styles/, but not where to copy it to.
Generally, if you want to download, it will go:
# download: remote -> local
scp user@remote_host:remote_file local_file
where local_file might actually be a directory to put the file you're copying in. To upload, it's the opposit...
Suppress warning CS1998: This async method lacks 'await'
...ou can take advantage of the fact that async is an implementation detail.
If you have nothing to await, then you can just return Task.FromResult:
public Task<int> Success() // note: no "async"
{
... // non-awaiting code
int result = ...;
return Task.FromResult(result);
}
In the case ...
Does java.util.List.isEmpty() check if the list itself is null? [duplicate]
Does java.util.List.isEmpty() check if the list itself is null , or do I have to do this check myself?
8 Answers
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Check if a path represents a file or a folder
I need a valid method to check if a String represents a path for file or a directory. What are valid directory names in Android? As it comes out, folder names can contain '.' chars, so how does system understand whether there's a file or a folder?
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