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Number of lines in a file in Java
...ly need to know the number of lines in these files, usually I open them up and read them line by line until I reach the end of the file
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How to replace captured groups only?
I have HTML code before and after the string:
5 Answers
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Show data on mouseover of circle
...ement to each circle, as the browser will take care of showing the tooltip and you don't need the mousehandler. The code would be something like
vis.selectAll("circle")
.data(datafiltered).enter().append("svg:circle")
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.append("svg:title")
.text(function(d) { return d.x; });
If you...
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 can I implode an array while skipping empty array items?
...k if you have 0 (or any other value that evaluates to false) in your array and you want to keep it. But then you can provide your own callback function.
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Margin while printing html page
... am using a separate style-sheet for printing. Is it possible to set right and left margin in the style-sheet which set the print margin (i.e. margin on paper).
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Use JavaScript to place cursor at end of text in text input element
What is the best way (and I presume simplest way) to place the cursor at the end of the text in a input text element via JavaScript - after focus has been set to the element?
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Why do we have map, fmap and liftM?
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map exists to simplify operations on lists and for historical reasons (see What's the point of map in Haskell, when there is fmap?).
You might ask why we need a separate map function. Why not just do away with the current
list-only map function, and rename fmap...
What is an example of the simplest possible Socket.io example?
So, I have been trying to understand Socket.io lately, but I am not a supergreat programmer, and almost every example I can find on the web (believe me I have looked for hours and hours), has extra stuff that complicates things. A lot of the examples do a bunch of things that confuse me, or connect ...
Can you make just part of a regex case-insensitive?
...e minus sign will be turned off. E.g. (?i-sm) turns on case insensitivity, and turns off both single-line mode and multi-line mode.
Not all regex flavors support this. JavaScript and Python apply all mode modifiers to the entire regular expression. They don't support the (?-ismx) syntax, since turn...