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How can I pad an integer with zeros on the left?
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Use java.lang.String.format(String,Object...) like this:
String.format("%05d", yournumber);
for zero-padding with a length of 5. For hexadecimal output replace the d with an x as in "%05x".
The full formatting options are documented as part of java.util.Formatter.
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How do I automatically sort a has_many relationship in Rails?
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edited Apr 10 '09 at 23:44
answered Apr 10 '09 at 21:54
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Unique constraint that allows empty values in MySQL
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edited Oct 31 '12 at 19:00
EricC
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answered Aug 28 ...
Redis is single-threaded, then how does it do concurrent I/O?
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370
Well it depends on how you define concurrency.
In server-side software, concurrency and paralle...
How can you escape the @ character in javadoc?
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+50
Use the {@literal} javadoc tag:
/**
* This is an "at" symbol: {@literal @}
*/
The javadoc for this will read:
This is an "at" sy...
How to specify the default error page in web.xml?
...rror page when user encounters a certain error such as error with code of 404:
3 Answers
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“ArrayAdapter requires the resource ID to be a TextView” xml problems
...earLayout, RelativeLayout etc!), something like this:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
// other attributes of the TextView
/>
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Android: I am unable to have ViewPager WRAP_CONTENT
I have setup a simple ViewPager that has an ImageView with a height of 200dp on each page.
34 Answers
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Get the closest number out of an array
I have a number from minus 1000 to plus 1000 and I have an array with numbers in it. Like this:
20 Answers
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Convert an ISO date to the date format yyyy-mm-dd in JavaScript
How can I get a date having the format yyyy-mm-dd from an ISO 8601 date?
18 Answers
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