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Long list of if statements in Java
...
using Command pattern:
public interface Command {
void exec();
}
public class CommandA() implements Command {
void exec() {
// ...
}
}
// etc etc
then build a Map<String,Command> object and populat...
What is a 'multi-part identifier' and why can't it be bound?
...d up rewriting the query, change the order of joins, change some groupings and then it eventually works, but I just don't quite get it.
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Google Map API V3: How to add Custom data to markers
...rmation to my markers for later use. There are ways to have an info-window and a title, but what If I want to associate the marker with other information.
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Can I use non existing CSS classes?
...our case the "target" class does in fact exist on those specific elements, and your markup is perfectly valid as it is.
This doesn't necessarily mean that you need to have a class declared in the HTML before you can use it in CSS either. See ruakh's comment. Whether or not a selector is valid depen...
Find the division remainder of a number
... % performs a true modulus, which returns values on the range [0, divisor) and pairs well with floored division (towards negative infinity). C languages use the % operator for remainder operations which returns values on the range (-divisor, divisor) and pairs well with standard division (towards ze...
What does the 'static' keyword do in a class?
...n the example given, main does not know which instance of the Hello class (and therefore which instance of the Clock class) it should refer to. static members can only refer to static members. Instance members can, of course access static members.
Side note: Of course, static members can access ins...
1030 Got error 28 from storage engine
...orage engine" - means "not enough disk space".
To show disc space use command below.
myServer# df -h
Results must be like this.
Filesystem Size Used Avail Capacity Mounted on
/dev/vdisk 13G 13G 46M 100% /
devfs 1.0k 1.0k 0B 100% /dev
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Returning first x items from array
...his case it is unrelated to the order. it is just about the first 5 items. and you can't use array_slice here.
– ESCOBAR
Jun 10 '14 at 16:20
2
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What is the best (idiomatic) way to check the type of a Python variable? [duplicate]
...scussion. What are its advantages? Can we see some example code, to understand how it compares? The ABC PEP link is rather heavy with theory and quite a lot to consume when the goal is to simply test if something is a dict or string. Is there additional effort to implement ABCs, and (especially for ...
mysqli or PDO - what are the pros and cons? [closed]
In our place we're split between using mysqli and PDO for stuff like prepared statements and transaction support. Some projects use one, some the other. There is little realistic likelihood of us ever moving to another RDBMS.
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