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How do I find the MySQL my.cnf location
...too abstract. The file might be in 5 (or more?) locations, and they would all be valid because they load cascading.
/etc/my.cnf
/etc/mysql/my.cnf
$MYSQL_HOME/my.cnf
[datadir]/my.cnf
~/.my.cnf
Those are the default locations MySQL looks at. If it finds more than one, it will load each of them &...
SQL join: selecting the last records in a one-to-many relationship
... purchases. Each purchase belongs to one customer. I want to get a list of all customers along with their last purchase in one SELECT statement. What is the best practice? Any advice on building indexes?
...
Java: when to use static methods
...
One rule-of-thumb: ask yourself "Does it make sense to call this method, even if no object has been constructed yet?" If so, it should definitely be static.
So in a class Car you might have a method:
double convertMpgToKpl(double mpg)
...which would be static, because one mig...
Enum Naming Convention - Plural
...
Would you really put a [Flags] attribute on your example though? It doesn't make sense for something to have a status of both "Incomplete" and "Ready". If you had enum [Flags]Steps { First, Second, Third }, would you really name your var...
Automatic HTTPS connection/redirect with node.js/express
...ng to get HTTPS set up with a node.js project I'm working on. I've essentially followed the node.js documentation for this example:
...
What is the difference between JDK and JRE?
...ke javadoc and jdb). It is capable of creating and compiling programs.
Usually, if you only care about running Java programs on computer you will only install the JRE. It's all you need. On the other hand, if you are planning to do some Java programming, you need to install the JDK instead.
Somet...
How to test multiple variables against a value?
...lish sentence and guess that you are talking about the same comparison for all names here. You are looking for:
if x == 1 or y == 1 or z == 1:
x and y are otherwise evaluated on their own (False if 0, True otherwise).
You can shorten that using a containment test against a tuple:
if 1 in (x, y,...
How do I close a single buffer (out of many) in Vim?
...ow what you're doing, you can also use :bw
:bw
Like |:bdelete|, but really delete the
buffer.
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Convert from enum ordinal to enum type
I've the enum type ReportTypeEnum that get passed between methods in all my classes but I then need to pass this on the URL so I use the ordinal method to get the int value. After I get it in my other JSP page, I need to convert it to back to an ReportTypeEnum so that I can continue passing it. ...
Selecting text in an element (akin to highlighting with your mouse)
...Range();
range.selectNodeContents(node);
selection.removeAllRanges();
selection.addRange(range);
} else {
console.warn("Could not select text in node: Unsupported browser.");
}
}
const clickable = document.querySelector('.click-me');
clickable.addEv...