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Vertically align text within a div [duplicate]
The code below (also available as a demo on JS Fiddle ) does not position the text in the middle, as I ideally would like it to. I cannot find any way to vertically centre text in a div , even using the margin-top attribute. How can I do this?
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Regex for string contains?
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Assuming regular PCRE-style regex flavors:
If you want to check for it as a single, full word, it's \bTest\b, with appropriate flags for case insensitivity if desired and delimiters for your programming language. \b represents a "word boundary", that is, a point between characters where a wor...
How to convert a data frame column to numeric type?
...w you probably ask yourself "Where's an anomaly?" Well, I've bumped into quite peculiar things in R, and this is not the most confounding thing, but it can confuse you, especially if you read this before rolling into bed.
Here goes: first two columns are character. I've deliberately called 2nd one ...
Mongodb Explain for Aggregation framework
... an explain function for the Aggregation framework in MongoDB? I can't see it in the documentation.
3 Answers
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Convert string in base64 to image and save on filesystem in Python
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Starting with
img_data = b'iVBORw0KGgoAAAANSUhEUgAABoIAAAaCCAYAAAABZu+EAAAqOElEQVR42uzBAQEAAACAkP6v7ggK\nAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\nAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
Differences in auto-unboxing between Java 6 vs Java 7
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It looks like the language in section 5.5 Casting Conversion of Java 7 JLS was updated in comparison to the same section in the Java 5/6 JLS, probably to clarify the allowed conversions.
Java 7 JLS says
An expression of ...
How to keep the spaces at the end and/or at the beginning of a String?
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Even if you use string formatting, sometimes you still need white spaces at the beginning or the end of your string. For these cases, neither escaping with \, nor xml:space attribute helps. You must use HTML entity   for a whitespace.
Use   for non-breakable whitespac...
How can I decrease the size of Ratingbar?
In my activity I have some Rating bars. But the size of this bar is so big!
How can I make it smaller?
16 Answers
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How to remove leading zeros from alphanumeric text?
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Regex is the best tool for the job; what it should be depends on the problem specification. The following removes leading zeroes, but leaves one if necessary (i.e. it wouldn't just turn "0" to a blank string).
s.replaceFirst("^0+(?!$)", "")
The ^ anchor will make...
How can I change or remove HTML5 form validation default error messages?
...nly numbers are required and length of value must be 10. When I try to submit form with value which length is 5, the default error message appears: Please match the requested format
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