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How do I create a URL shortener?
...a URL shortener service where you can write a long URL into an input field and the service shortens the URL to " http://www.example.org/abcdef ".
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How to lay out Views in RelativeLayout programmatically?
...rt from setting the ids of a childview, adding childview to the parentview and calling requestLayout() on childview before setting the rules of the other childview made things work. Hope this helps someone
– 2cupsOfTech
Aug 26 '15 at 16:46
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How should equals and hashcode be implemented when using JPA and Hibernate
How should model class's equals and hashcode be implemented in Hibernate? What are the common pitfalls? Is the default implementation good enough for most cases? Is there any sense to use business keys?
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How to apply a function to two columns of Pandas dataframe
Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function :
12 Answers
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Setting up foreign keys in phpMyAdmin?
I'm setting up a database using phpMyAdmin. I have two tables ( foo and bar ), indexed on their primary keys . I am trying to create a relational table ( foo_bar ) between them, using their primary keys as foreign keys.
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How do servlets work? Instantiation, sessions, shared variables and multithreading
...ervlets. For information passing among those servlets I am setting session and instance variables.
8 Answers
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Multiline TextView in Android?
...text you're putting in the TextView is short, it will not automatically expand to four lines. If you want the TextView to always have four lines regardless of the length of the text in it, set the android:lines attribute:
<TextView
android:id="@+id/address1"
android:gravity="left"
an...
How does autowiring work in Spring?
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First, and most important - all Spring beans are managed - they "live" inside a container, called "application context".
Second, each application has an entry point to that context. Web applications have a Servlet, JSF uses a el-re...
Set select option 'selected', by value
...his is the best solution if the desired value may or may not be an option, and you don't want to make a change if it isn't an option. If you use .val() on the select and try to pick a value that isn't there it will deselect everything.
– Wally Altman
Jun 19 '1...
CSS selector for a checked radio button's label
...ator. It combines two sequences of simple selectors having the same parent and the second one must come IMMEDIATELY after the first.
As such:
input[type="radio"]:checked+label{ font-weight: bold; }
//a label that immediately follows an input of type radio that is checked
works very nicely for...