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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 pattern = Pa...
Unexpected results when working with very big integers on interpreted languages
...rbitrary precision. It will produce the correct answer on 32 or 64 bit platforms.
This can be seen by raising 2 to a power far greater than the bit width of the platform:
>>> 2**99
633825300114114700748351602688L
You can demonstrate (with Python) that the erroneous values you are getti...
Django Admin - change header 'Django administration' text
...rs.filesystem.Loader is added into TEMPLATE_LOADERS.
See docs for more information on settings.py.
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The calling thread cannot access this object because a different thread owns it
...Dispatcher.Invoke is for immediately updating the UI in a function that performs other tasks:
// Force WPF to render UI changes immediately with this magic line of code...
Dispatcher.Invoke(new Action(() => { }), DispatcherPriority.ContextIdle);
I use this to update button text to "Processing....
How do I download a binary file over HTTP?
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The simplest way is the platform-specific solution:
#!/usr/bin/env ruby
`wget http://somedomain.net/flv/sample/sample.flv`
Probably you are searching for:
require 'net/http'
# Must be somedomain.net instead of somedomain.net/, otherwise, it will th...
Erratic hole type resolution
...s because the values are determined at run time. It can bring about a transformation of values depending on what are entered at run time hence it assumes that the hole is already updated.
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How to properly create composite primary keys - MYSQL
...rement surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
8 ...
Node.js check if path is file or directory
...synchronous version is usually preferable if you care about general app performance.
– AlexMA
Mar 14 '14 at 20:10
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How can I disable a button in a jQuery dialog from a function?
I have a jQuery dialog that requires the user to enter certain information. In this form, I have a "continue" button. I would like this "continue" button to only be enabled once all the fields have content in them, else it will remain disabled.
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Maximum and Minimum values for ints
...plain int type is unbounded.
However, you might actually be looking for information about the current interpreter's word size, which will be the same as the machine's word size in most cases. That information is still available in Python 3 as sys.maxsize, which is the maximum value representable by...