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How to check edittext's text is email address or not?
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/**
* method is used for checking valid email id format.
*
* @param email
* @return boolean true for valid false for invalid
*/
public static boolean isEmailValid(String email) {
String expression = "^[\\w\\.-]+@([\\w\\-]+\\.)+[A-Z]{2,4}$";
Pattern ...
SQL Server - Return value after INSERT
...INSERT-statement.
Example:
I've got a table with the attributes name and id. id is a generated value.
13 Answers
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Using SSH keys inside docker container
...d command
$ docker build -t example --build-arg ssh_prv_key="$(cat ~/.ssh/id_rsa)" --build-arg ssh_pub_key="$(cat ~/.ssh/id_rsa.pub)" --squash .
Dockerfile
FROM python:3.6-slim
ARG ssh_prv_key
ARG ssh_pub_key
RUN apt-get update && \
apt-get install -y \
git \
openss...
What's the proper value for a checked attribute of an HTML checkbox?
...ording to the spec here, the most correct version is:
<input name=name id=id type=checkbox checked=checked>
For HTML, you can also use the empty attribute syntax, checked="", or even simply checked (for stricter XHTML, this is not supported).
Effectively, however, most browsers will suppor...
Javascript Shorthand for getElementById
Is there any shorthand for the JavaScript document.getElementById? Or is there any way I can define one? It gets repetitive retyping that over and over .
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Django ManyToMany filter()
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Just restating what Tomasz said.
There are many examples of FOO__in=... style filters in the many-to-many and many-to-one tests. Here is syntax for your specific problem:
users_in_1zone = User.objects.filter(zones__id=<id1>)
# same thing but us...
Javascript - Append HTML to container element without innerHTML
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@kennydelacruz: The OP didn't want to append new HTML to an existing HTML because it destroys and recreates the existing elements. The OP found a solution by creating a new element and append that but they didn't want to add an additional element. I...
A generic list of anonymous class
...ew List<T>(elements);
}
var list = CreateList(o, o1);
You get the idea :)
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Python/postgres/psycopg2: getting ID of row just inserted
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cursor.execute("INSERT INTO .... RETURNING id")
id_of_new_row = cursor.fetchone()[0]
And please do not build SQL strings containing values manually. You can (and should!) pass values separately, making it unnecessary to escape and SQL injection impossible:
sql_stri...
Which annotation should I use: @IdClass or @EmbeddedId
...PI) specification has 2 different ways to specify entity composite keys: @IdClass and @EmbeddedId .
7 Answers
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