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SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
...t puts null values in for the unpopulated fields.
This wikipedia article explains the various types of joins with examples of output given a sample set of tables.
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Joining two lists together
...to it (as if you called .Add(foo) a bunch of times). The Concat and Union extension methods don't change the original list. They lazily construct a new IEnumerable and won't even access the original list members unless necessary. As noted, Union removes duplicates while the others don't.
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Objective-C : BOOL vs bool
...T_OS_WATCH
typedef bool BOOL;
#else
typedef signed char BOOL;
// BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C"
// even if -funsigned-char is used.
#endif
#define YES ((BOOL)1)
#define NO ((BOOL)0)
So, yes, you can assume that BOOL is a char. You can use the (C99) bool type,...
java.sql.SQLException: Incorrect string value: '\xF0\x9F\x91\xBD\xF0\x9F…'
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What you have is EXTRATERRESTRIAL ALIEN (U+1F47D) and BROKEN HEART (U+1F494) which
are not in the basic multilingual plane. They cannot be even represented in java as one char, "????????".length() == 4. They are definitely not null characters ...
How to convert List to List?
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Exception raised - LINQ to Entities does not recognize the method 'Int32 IndexOf(Char)' method, and this method cannot be translated into a store expression. .net 4.0
– markthewizard1234
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How to convert a String to CharSequence?
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Except that you can't assign a CharSequence to a String without an explicit cast.
– gustafc
Sep 8 '09 at 6:26
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How can I tell when a MySQL table was last updated?
...he footer of my page, I would like to add something like "last updated the xx/xx/200x" with this date being the last time a certain mySQL table has been updated.
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How to save a BufferedImage as a File
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Also, make sure that outputfile exists. If it doesn't, write() will (incorrectly) throw a NullPointerException
– Cody S
Oct 23 '14 at 18:52
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How to show line number when executing bash script
... which has a lot of commands and will generate lots of output, I use set -x or set -v and set -e , so the script would stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem.
Is there a method which can outp...
How to add a string to a string[] array? There's no .Add function
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You can't add items to an array, since it has fixed length. What you're looking for is a List<string>, which can later be turned to an array using list.ToArray(), e.g.
List<string> list = new List<string>();
list.Add("Hi");
String[] str = list.ToArray();...