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Checking for a null int value from a Java ResultSet
...hich case your test is completely redundant.
If you actually want to do something different if the field value is NULL, I suggest:
int iVal = 0;
ResultSet rs = magicallyAppearingStmt.executeQuery(query);
if (rs.next()) {
iVal = rs.getInt("ID_PARENT");
if (rs.wasNull()) {
// handle ...
How do you add an action to a button programmatically in xcode
...interface builder, but I want to add the action programmatically to save time and to avoid switching back and forth constantly. The solution is probably really simple, but I just can't seem to find any answers when I search it. Thank you!
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Test for multiple cases in a switch, like an OR (||)
... you use a switch case when you need to test for a or b in the same case?
6 Answers
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Order of event handler execution
...ey are executed in the order they are registered. However, this is an implementation detail, and I would not rely on this behavior staying the same in future versions, since it is not required by specifications.
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find -exec a shell function in Linux?
... with export -f, otherwise the subshell won't inherit them:
export -f dosomething
find . -exec bash -c 'dosomething "$0"' {} \;
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how to check and set max_allowed_packet mysql variable [duplicate]
...ket. It you set the value under [mysqld_safe] (which is default settings came with the mysql installation) mode in /etc/my.cnf, it did no work. I did not dig into the problem. But after I change it to [mysqld] and restarted the mysqld, it worked.
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postgresql - sql - count of `true` values
...SELECT COALESCE(sum(CASE WHEN myCol THEN 1 ELSE 0 END),0) FROM <table name>
or, as you found out for yourself:
SELECT count(CASE WHEN myCol THEN 1 END) FROM <table name>
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How do I mock an autowired @Value field in Spring with Mockito?
...l for even more information, although you probably won't need it since the method is very easy to use
UPDATE
Since the introduction of Spring 4.2.RC1 it is now possible to set a static field without having to supply an instance of the class. See this part of the documentation and this commit.
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How do I disable the 'Debug / Close Application' dialog on Windows Vista?
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Te documentation of ForceQueue is vague, I don't get exactly what it means.
– Zitrax
Mar 14 '11 at 15:38
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Naming conventions: “State” versus “Status” [closed]
...of an entity - all its values and relationships at a particular point in time (usually, current)
Status is more of a time-point, say, where something is at in a process or workflow - is it dirty (therefore requiring saving), is it complete, is it pending input, etc
I hope that helps you in your de...