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Check if EditText is empty. [closed]
I have 5 EditTexts in android for users to input. I would like to know if I could have a method for checking all the 5 EditTexts if they are null. Is there any way to do this??
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How do you do a case insensitive search using a pattern modifier using less?
...e of less that I found is starting it with +F as an argument (or hitting SHIFT+F while in less). This causes it to follow the file you've opened, in the same way that tail -f <file> will. Very handy if you're watching log files from an application, and are likely to want to page back up (if it...
Programmatically fire button click event?
...nswer, but more flexible as it'll keep track of the buttons actual actions if you change them or add more than one.
[button sendActionsForControlEvents:UIControlEventTouchUpInside];
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How do I convert a IPython Notebook into a Python file via commandline?
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If you don't want to output a Python script every time you save, or you don't want to restart the IPython kernel:
On the command line, you can use nbconvert:
$ jupyter nbconvert --to script [YOUR_NOTEBOOK].ipynb
As a bit ...
detach all packages while working in R
... value present. One can test for this with names(sessionInfo()$otherPkgs). If it returns NULL, then this is the cause.
– mmfrgmpds
Sep 20 '19 at 16:31
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How to send a JSON object using html form data
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Get complete form data as array and json stringify it.
var formData = JSON.stringify($("#myForm").serializeArray());
You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If this data is passed as json string via norm...
Difference between HashSet and HashMap?
...from the fact that HashSet does not allow duplicate values, what is the difference between HashMap and HashSet ?
19 An...
Can attributes be added dynamically in C#?
...u can get an instance of an attribute for a type and change the properties if they're writable but that won't affect the attribute as it is applied to the type.
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Add default value of datetime field in SQL Server to a timestamp
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For modifying an existing column in an existing table:
ALTER TABLE YourTable ADD CONSTRAINT DF_YourTable DEFAULT GETDATE() FOR YourColumn
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SQL Server - stop or break execution of a SQL script
...te 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.
Notice that 'ho' is not printed.
CAVEATS:
This only works if you are logged in as admin ('sysadmin' role), and also leaves you with no database connection.
If you are NOT logged in as admin, ...