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How should I validate an e-mail address?
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Don't use a reg-ex.
Apparently the following is a reg-ex that correctly validates most e-mails addresses that conform to RFC 2822, (and will still fail on things like "user@gmail.com.nospam", as will org.apache.commons.validator.routines.EmailVa...
A reference to the dll could not be added
When I add a .dll file as a reference in C# application it shows an error :
17 Answers
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Spring: @Component versus @Bean
...-configure beans using classpath scanning. There's an implicit one-to-one mapping between the annotated class and the bean (i.e. one bean per class). Control of wiring is quite limited with this approach, since it's purely declarative.
@Bean is used to explicitly declare a single bean, rather than ...
if else statement in AngularJS templates
... answered Oct 3 '14 at 21:38
lpapponelpappone
2,63522 gold badges1212 silver badges1515 bronze badges
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Auto detect mobile browser (via user-agent?) [closed]
...e from a mobile web browser so that I can then auto detect and display the appropriate version of my web site?
16 Answers
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How to change a nullable column to not nullable in a Rails migration?
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For Rails 4, this appears to be the most accurate and complete answer, including the commented-out default setting.
– Mike Fischer
Aug 23 '15 at 16:31
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If my interface must return Task what is the best way to have a no-operation implementation?
...ake can't be changed). If LazyBar s implementation is unusual in that it happens to run quickly and synchronously - what is the best way to return a No-Operation task from the method?
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Logging uncaught exceptions in Python
... program is going to terminate due to an uncaught exception, which cannot happen more than once.
– Nawaz
Nov 16 '16 at 5:36
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How do I unlock a SQLite database?
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I caused my sqlite db to become locked by crashing an app during a write. Here is how i fixed it:
echo ".dump" | sqlite old.db | sqlite new.db
Taken from: http://random.kakaopor.hu/how-to-repair-an-sqlite-database
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Add floating point value to android resources/values
...nteger" format="float">0.60</item>
Use from a layout.xml file
app:layout_constraintGuide_percent="@integer/guideline_button_top"
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