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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
... on the web, it looks like the Maven uses JAVA_HOME, but the Maven Plugin knows nothing about JAVA_HOME and instead defaults to the VM used to start Eclipse.
– jnosek
Jul 14 '11 at 15:18
...
Checking if a variable is defined?
...correct syntax for the above statement is:
if (defined?(var)).nil? # will now return true or false
print "var is not defined\n".color(:red)
else
print "var is defined\n".color(:green)
end
substituting (var) with your variable. This syntax will return a true/false value for evaluation in the if ...
How does `scp` differ from `rsync`?
...able on a Unix-like system, so you prevent an annoying "command not found" now and then.
– Rafa
May 6 '14 at 21:58
3
...
Check if a given key already exists in a dictionary
...
I fully agree. But if you only need to know if a key exists, or you need to distinguish between a case where the key is defined and a case where you are using a default, in is the best way of doing it.
– Chris B.
Oct 21 '09 at...
How to determine a Python variable's type?
...
I had to double take when I saw this. Java SE8 now contains unsigned integers, and I've developed so much with it that it seems sinful that Java never had unsigned integers before SE8.
– dddJewelsbbb
Nov 26 '18 at 15:39
...
How to get the IP address of the server on which my C# application is running on?
...
No, your machine will only know its NAT address.
– Andrew Hare
Jul 1 '09 at 13:39
1
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Propagate all arguments in a bash shell script
...G in $*; do
echo $ARG
done
echo "================================="
Now, run the test script with various arguments:
# ./test.sh "arg with space one" "arg2" arg3
=================================
Quoted DOLLAR-AT
arg with space one
arg2
arg3
=================================
NOT Quoted DOLL...
Problem with converting int to string in Linq to entities
...(".", c.ContactID.ToString(), c.LocationID.ToString())
}).ToArray();
Now, I grant that it does get cumbersome to have to write two anonymous selects, but I would argue that is outweighed by the convenience of which you can perform string (and other) functions not supported in L2E. Also keep in...
How can I sort a List alphabetically?
...e line shorter, though.
Never worry about is this list really sorted right now becaude a TreeSet is always sorted, no matter what you do.
You cannot have duplicate entries. Depending on your situation this may be a pro or a con. If you need duplicates, stick to your List.
An experienced programmer l...
sql query to return differences between two tables
...JOIN B ON (A.C = B.C)
WHERE A.C IS NULL OR B.C IS NULL
What you need to know in this case is, that when a record can be found in A, but not in B, than the columns which come from B will be NULL, and similarly for those, which are present in B and not in A, the columns from A will be null.
...