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How to declare a type as nullable in TypeScript?
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let employe2: Employee = { id: 1, name: 'John', salary: null };
EDIT : For this to work as expected, you should enable the strictNullChecks in tsconfig.
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Postgresql aggregate array
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Thanks for contributing an answer to Stack Overflow!Please be sure to answer the question. Provide details and share your research!But avoid …Asking for help, clarification, or responding to other answers.Making statements based o...
MySQL Data - Best way to implement paging?
...tain offset up to the end of the result set, you can use some large number for the second parameter. This statement retrieves all rows from the 96th row to the last:
SELECT * FROM tbl LIMIT 95,18446744073709551615;
With one argument, the value specifies the number of rows to return from the beginni...
How to call Android contacts list?
...ity, create an Intent that asks the system to find an Activity that can perform a PICK action from the items in the Contacts URI.
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
Call startActivityForResult, passing in this Intent (and a request code integer,...
Changing the image source using jQuery
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You can use jQuery's attr() function. For example, if your img tag has an id attribute of 'my_image', you would do this:
<img id="my_image" src="first.jpg"/>
Then you can change the src of your image with jQuery like this:
$("#my_image").attr("src","sec...
Run a Docker image as a container
... docker run -i -t 8dbd9e392a96 /bin/bash
Please see Docker run reference for more information.
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How to get the selected index of a RadioGroup in Android
...adioGroup in Android or do I have to use OnCheckedChangeListener to listen for changes and have something that holds the last index selected?
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Mongoose query where value is not null
...null } })
A few links that might help:
The mongoose query api
The docs for mongo query operators
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How to reset radiobuttons in jQuery so that none is checked
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In versions of jQuery before 1.6 use:
$('input[name="correctAnswer"]').attr('checked', false);
In versions of jQuery after 1.6 you should use:
$('input[name="correctAnswer"]').prop('checked', false);
but if you are using 1.6.1+ you can use the fir...
The preferred way of creating a new element with jQuery
...those dollar signs necessary or a typo? $div. I haven't seen that syntax before, but I'm new to Jquery.
– felwithe
Feb 22 '15 at 15:05
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