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java : convert float to String and String to float
...ing(25.0f);
To compare it's always better to convert the string to float and compare as two floats. This is because for one float number there are multiple string representations, which are different when compared as strings (e.g. "25" != "25.0" != "25.00" etc.)
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Reorder levels of a factor without changing order of values
I have data frame with some numerical variables and some categorical factor variables. The order of levels for those factors is not the way I want them to be.
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Handling optional parameters in javascript
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You can know how many arguments were passed to your function and you can check if your second argument is a function or not:
function getData (id, parameters, callback) {
if (arguments.length == 2) { // if only two arguments were supplied
if (Object.prototype.toString.call(param...
How to draw a line in android
Can anybody tell how to draw a line in Android, perhaps with an example?
15 Answers
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Create RegExps on the fly using string variables
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And omit the / regex delimiters when using this form too.
– cdhowie
Dec 6 '10 at 22:28
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Check that Field Exists with MongoDB
So I'm attempting to find all records who have a field set and isn't null.
4 Answers
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How to show current year in view?
...;%= Time.current.year %>
http://pleac.sourceforge.net/pleac_ruby/datesandtimes.html
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Which Eclipse version should I use for an Android app?
I am starting to develop Android applications. Which version of Eclipse should I use?
14 Answers
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Select all child elements recursively in CSS
... element y that is inside x, however deeply nested it may be - children, grandchildren and so on.
The asterisk * matches any element.
Official Specification: CSS 2.1: Chapter 5.5: Descendant Selectors
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I need a Nodejs scheduler that allows for tasks at different intervals [closed]
...* * * * *' - runs every 5 seconds
'10,20,30 * * * * *' - run at 10th, 20th and 30th second of every minute
'0 * * * * *' - runs every minute
'0 0 * * * *' - runs every hour (at 0 minutes and 0 seconds)
But also more complex schedules e.g.
'00 30 11 * * 1-5' - Runs every weekday (Monday through Fr...