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Java regex email
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FWIW, here is the Java code we use to validate email addresses. The Regexp's are very similar:
public static final Pattern VALID_EMAIL_ADDRESS_REGEX =
Pattern.compile("^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$", Pattern.CASE_INSENSITIVE);
public static boolean validate(String emailStr) {
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Using the RUN instruction in a Dockerfile with 'source' does not work
I have a Dockerfile that I am putting together to install a vanilla python environment (into which I will be installing an app, but at a later date).
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Getting “bytes.Buffer does not implement io.Writer” error message
I'm trying to have some Go object implement io.Writer, but writes to a string instead of a file or file-like object. I thought bytes.Buffer would work since it implements Write(p []byte) . However when I try this:
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Does Python optimize tail recursion?
I have the following piece of code which fails with the following error:
6 Answers
6
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Foreign Key to multiple tables
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You have a few options, all varying in "correctness" and ease of use. As always, the right design depends on your needs.
You could simply create two columns in Ticket, OwnedByUserId and OwnedByGroupId, and have nullable Foreign Keys to eac...
Auto-size dynamic text to fill fixed size container
I need to display user entered text into a fixed size div. What i want is for the font size to be automatically adjusted so that the text fills the box as much as possible.
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Find value in an array
...de?(9) # => false
If you mean something else, check the Ruby Array API
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Check if property has attribute
Given a property in a class, with attributes - what is the fastest way to determine if it contains a given attribute? For example:
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Quickest way to convert a base 10 number to any base in .NET?
...onvert.ToString can be used to convert a number to its equivalent string representation in a specified base.
Example:
string binary = Convert.ToString(5, 2); // convert 5 to its binary representation
Console.WriteLine(binary); // prints 101
However, as pointed out by the comments, C...
How to reload .bash_profile from the command line?
I can get the shell to recognize changes to .bash_profile by exiting and logging back in but I would like to be able to do it on demand.
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