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Best way to alphanumeric check in JavaScript
What is the best way to perform an alphanumeric check on an INPUT field in JSP ? I have attached my current code
10 Answ...
How can I have ruby logger log output to stdout as well as file?
Someting like a tee functionality in logger.
20 Answers
20
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CALayer with transparent hole in it
I have a simple view (left side of the picture) and i need to create some kind of overlay (right side of the picture) to this view. This overlay should have some opacity, so the view bellow it is still partly visible.
Most importantly this overlay should have a circular hole in the middle of it so i...
What is the difference between char * const and const char *?
What's the difference between:
19 Answers
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How do I make an attributed string using Swift?
I am trying to make a simple Coffee Calculator. I need to display the amount of coffee in grams. The "g" symbol for grams needs to be attached to my UILabel that I am using to display the amount. The numbers in the UILabel are changing dynamically with user input just fine, but I need to add a lower...
“var” or no “var” in JavaScript's “for-in” loop?
What's the correct way to write a for-in loop in JavaScript? The browser doesn't issue a complaint about either of the two approaches I show here. First, there is this approach where the iteration variable x is explicitly declared:
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Why use iterators instead of array indices?
Take the following two lines of code:
27 Answers
27
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How can I check whether Google Maps is fully loaded?
I’m embedding Google Maps into my web site. Once Google Maps is loaded, I need to kick off a few JavaScript processes.
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ObservableCollection Doesn't support AddRange method, so I get notified for each item added, besides
I want to be able to add a range and get updated for the entire bulk.
12 Answers
12
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Fastest way to replace NAs in a large data.table
I have a large data.table , with many missing values scattered throughout its ~200k rows and 200 columns. I would like to re code those NA values to zeros as efficiently as possible.
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