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Optimal way to concatenate/aggregate strings
... NameCount
FROM Partitioned
WHERE NameNumber = 1
UNION ALL
SELECT
P.ID,
CAST(C.FullName + ', ' + P.Name AS nvarchar),
P.Name,
P.NameNumber,
P.NameCount
FROM Partitioned AS P
INNER JOIN Concatenated AS C
...
Installing Java 7 on Ubuntu
to install java I have always used the classic way from the terminal.
I would like to install java manually.
I placed the folder of the JDK on the desk and I set environment variables (PATH, CLASSPATH and JAVA_HOME).
From the terminal, if I type java -version I get printed
...
How do you detect Credit card type based on number?
...rds; there are other cards issued using the MasterCard system that do not fall into this IIN range. In 2016, they will add numbers in the range (222100-272099).
American Express: ^3[47][0-9]{5,}$ American Express card numbers start with 34 or 37.
Diners Club: ^3(?:0[0-5]|[68][0-9])[0-9]{4,}$ Dine...
How to Implement DOM Data Binding in JavaScript
...ake this work, your object needs to implement the eventListener interface. All that's needed to accomplish this is to give the object a handleEvent() method.
That's where the inheritance comes in.
MyCtor.prototype.handleEvent = function(event) {
switch (event.type) {
case "change": th...
Is it possible to declare two variables of different types in a for loop?
...and clang for years (since gcc-7 and clang-4.0) (clang live example). This allows us to unpack a tuple like so:
for (auto [i, f, s] = std::tuple{1, 1.0, std::string{"ab"}}; i < N; ++i, f += 1.5) {
// ...
}
The above will give you:
int i set to 1
double f set to 1.0
std::string s set to "...
What is the difference between single-quoted and double-quoted strings in PHP?
...uotes in this syntax.
Nowdoc (since PHP 5.3.0) string syntax works essentially like single quoted strings. The difference is that not even single quotes or backslashes have to be escaped. A nowdoc is identified with the same <<< sequence used for heredocs, but the identifier which follows ...
Should you always favor xrange() over range()?
...
For performance, especially when you're iterating over a large range, xrange() is usually better. However, there are still a few cases why you might prefer range():
In python 3, range() does what xrange() used to do and xrange() does not exist. ...
Is it possible to define more than one function per file in MATLAB, and access them from outside tha
...ion in an m-file (i.e. the main function), is invoked when that m-file is called. It is not required that the main function have the same name as the m-file, but for clarity it should. When the function and file name differ, the file name must be used to call the main function.
All subsequent funct...
Is it possible to do a sparse checkout without checking out the whole repository first?
...mand, no need to run git pull
Note that it requires git version 2.25 installed. Read more about it here: https://github.blog/2020-01-17-bring-your-monorepo-down-to-size-with-sparse-checkout/
UPDATE:
The above git clone command will still clone the repo with its full history, though without check...
Difference between thread's context class loader and normal classloader
...
Indeed, not all classloaders have a classpath. When wrote "ClassB needs to be on the classpath of the classloader of ClassA", I meant "ClassB needs to loadable by the classloader of ClassA". 90% of the time they mean the same. But if ...