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An item with the same key has already been added
...operty (that should have been private) that only differed in case.
public string PropertyName {get;set;} // actually set propertyName, get propertyName
public string propertyName {get;set;}
should have been
public string PropertyName {get;set;}
private string propertyName {get;set;}
...
What does the “Just” syntax mean in Haskell?
...r integer functions that are meant to return Natural numbers (for example, String.indexOf - when a substring is not found, the returned index is commonly designed to be negative)
return a special value (pointer): NULL or some such
silently return without doing anything: for example, lend could be wr...
Using multiple arguments for string formatting in Python (e.g., '%s … %s')
I have a string that looks like '%s in %s' and I want to know how to seperate the arguments so that they are two different %s. My mind coming from Java came up with this:
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How to parse a date? [duplicate]
...h a different format.
To parse your "Thu Jun 18 20:56:02 EDT 2009" date string you need a SimpleDateFormat like this (roughly):
SimpleDateFormat parser=new SimpleDateFormat("EEE MMM d HH:mm:ss zzz yyyy");
Use this to parse the string into a Date, and then your other SimpleDateFormat to turn th...
#define macro for debug printing in C?
...0
#endif
And then use DEBUG_TEST where I used DEBUG.
If you insist on a string literal for the format string (probably a good idea anyway), you can also introduce things like __FILE__, __LINE__ and __func__ into the output, which can improve the diagnostics:
#define debug_print(fmt, ...) \
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Looking for jQuery find(..) method that includes the current node
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@ronen An extra file for something which can be done in one line? Thanks, but no thanks.
– user659025
Nov 18 '15 at 14:58
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How can I explode and trim whitespace?
For example, I would like to create an array from the elements in this string:
11 Answers
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Convert timestamp in milliseconds to string formatted time in Java
...ormat("HH:mm:ss.SSS");
formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
String dateFormatted = formatter.format(date);
See SimpleDateFormat for a description of other format strings that the class accepts.
See runnable example using input of 1200 ms.
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What are free monads?
...gives you a way to "get out" of it.
More generally, if X is a Y with some extra stuff P, then a "free X" is a a way of getting from a Y to an X without gaining anything extra.
Examples: a monoid (X) is a set (Y) with extra structure (P) that basically says it has an operation (you can think of add...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
...he List.
Fix
Create a LinkedList, which supports faster remove.
List<String> list = new LinkedList<String>(Arrays.asList(split));
On split taking regex
From the API:
String.split(String regex): Splits this string around matches of the given regular expression.
| is a regex ...