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List passed by ref - help me explain this behaviour
...passing a reference to the list, but your aren't passing the list variable by reference - so when you call ChangeList the value of the variable (i.e. the reference - think "pointer") is copied - and changes to the value of the parameter inside ChangeList aren't seen by TestMethod.
try:
private voi...
How do shift operators work in Java? [duplicate]
...out.println(Integer.toBinaryString(2 << 11));
Shifts binary 2(10) by 11 times to the left. Hence: 1000000000000
System.out.println(Integer.toBinaryString(2 << 22));
Shifts binary 2(10) by 22 times to the left. Hence : 100000000000000000000000
System.out.println(Integer.toBinarySt...
Rails find_or_create_by more than one attribute?
There is a handy dynamic attribute in active-record called find_or_create_by:
5 Answers
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C++ catch blocks - catch exception by value or reference? [duplicate]
I always catch exceptions by value. e.g
4 Answers
4
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Using str_replace so that it only acts on the first match?
...ng to all the parameters, the real issue is that doing string manipulation by numbers is just tricky sometimes - you have to be careful to pass the right variable/offset to functions. I'd actually go so far as to say that the above code is the most straightforward, and to me, logical, approach.
...
Correct file permissions for WordPress [closed]
... to Hardening WordPress all files except for wp-content should be writable by your user account only. wp-content must be writable by www-data too.
chown <username>:<username> -R * # Let your useraccount be owner
chown www-data:www-data wp-content # Let apache be owner of wp-content
M...
How to Join to first row
...Orders.OrderID
) LineItems2
Please note that TOP 1 without ORDER BY is not deterministic: this query you will get you one line item per order, but it is not defined which one will it be.
Multiple invocations of the query can give you different line items for the same order, even if the un...
MySQL get row position in ORDER BY
...
FROM TABLE t
JOIN (SELECT @rownum := 0) r
ORDER BY t.name) x
WHERE x.name = 'Beta'
...to get a unique position value. This:
SELECT t.id,
(SELECT COUNT(*)
FROM TABLE x
WHERE x.name <= t.name) AS position,
t.name
FROM TABLE t ...
How to request a random row in SQL?
...at link):
Select a random row with MySQL:
SELECT column FROM table
ORDER BY RAND()
LIMIT 1
Select a random row with PostgreSQL:
SELECT column FROM table
ORDER BY RANDOM()
LIMIT 1
Select a random row with Microsoft SQL Server:
SELECT TOP 1 column FROM table
ORDER BY NEWID()
Select a random ...
Can I pass parameters by reference in Java?
...
Java is confusing because everything is passed by value. However for a parameter of reference type (i.e. not a parameter of primitive type) it is the reference itself which is passed by value, hence it appears to be pass-by-reference (and people often claim that it is). T...