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C# code to validate email address
What is the most elegant code to validate that a string is a valid email address?
43 Answers
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“Code too large” compilation error in Java
Is there any maximum size for code in Java? I wrote a function with more than 10,000 lines. Actually, each line assigns a value to an array variable.
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UITableView row animation duration and completion callback
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Nowadays if you want to do this there is new function starting from iOS 11:
- (void)performBatchUpdates:(void (^)(void))updates
completion:(void (^)(BOOL finished))completion;
In updates closures you place the same code as in beginUpdates()/endUpdates section. An...
How to assign colors to categorical variables in ggplot2 that have stable mapping?
I've been getting up to speed with R in the last month.
5 Answers
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How to disable phone number linking in Mobile Safari?
Safari on iPhone automatically creates links for strings of digits that appear to the telephone numbers. I am writing a web page containing an IP address, and Safari is turning that into a phone number link. Is it possible to disable this behavior for a whole page or an element on a page?
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Batch renaming files with Bash
... rename a series of packages to remove their version numbers? I've been toying around with both expr and %% , to no avail.
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How to use R's ellipsis feature when writing your own function?
The R language has a nifty feature for defining functions that can take a variable number of arguments. For example, the function data.frame takes any number of arguments, and each argument becomes the data for a column in the resulting data table. Example usage:
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How to get an enum value from a string value in Java?
...eOf("A") will give you Blah.A.
Note that the name must be an exact match, including case: Blah.valueOf("a") and Blah.valueOf("A ") both throw an IllegalArgumentException.
The static methods valueOf() and values() are created at compile time and do not appear in source code. They do appear in Javad...
How to convert NSNumber to NSString
So I have an NSArray "myArray" with NSNumber s and NSString s. I need them in another UIView so i go like this:
7 Ans...
How to print a groupby object
I want to print the result of grouping with Pandas.
14 Answers
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