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How to make a query with group_concat in sql server [duplicate]
...hool s ON s.ID = m.schoolid
ORDER BY m.maskname
Additional information:
String Aggregation in the World of SQL Server
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In Functional Programming, what is a functor?
...llection. The type of the full collection is then something like T Int, T String, T Bool, if you are containing integers, strings, or Booleans respectively. If the element type is unknown, it is written as a type parameter a, as in T a.
Examples include lists (zero or more elements of type a), th...
List OrderBy Alphabetical Order
...ean an in-place sort (i.e. the list is updated):
people.Sort((x, y) => string.Compare(x.LastName, y.LastName));
If you mean a new list:
var newList = people.OrderBy(x=>x.LastName).ToList(); // ToList optional
shar...
Getting the filenames of all files in a folder [duplicate]
...irectory, and then call the getName() method to get the filename.
List<String> results = new ArrayList<String>();
File[] files = new File("/path/to/the/directory").listFiles();
//If this pathname does not denote a directory, then listFiles() returns null.
for (File file : files) {
...
JavaScript null check
... in JavaScript. However, it's always safe to test if the typeof(x) is the string "undefined", even if "x" is not a declared variable:
alert(typeof(x) === 'undefined'); // true
Also, variables can have the "undefined value" if they are not initialized:
var y;
alert(typeof(y) === 'undefined'); //...
Removing path and extension from filename in powershell
I have a series of strings which are full paths to files. I'd like to save just the filename, without the file extension and the leading path. So from this:
...
Debug vs Release in CMake
...
Instead of manipulating the CMAKE_CXX_FLAGS strings directly (which could be done more nicely using string(APPEND CMAKE_CXX_FLAGS_DEBUG " -g3") btw), you can use add_compiler_options:
add_compile_options(
"-Wall" "-Wpedantic" "-Wextra" "-fexceptions"
"$<$<CO...
Turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the
...a();
[OperationContract]
[FaultContract(typeof(ServiceData))]
string GetCCDBdataasXMLstring();
//[OperationContract]
//string GetData(int value);
//[OperationContract]
//CompositeType GetDataUsingDataContract(CompositeType composite);
// TODO: Add your service op...
When NOT to use yield (return) [duplicate]
...eason
// (a new state machine needs to be generated)
public IEnumerable<string> GetKeys()
{
foreach(string key in _someDictionary.Keys)
yield return key;
}
// DO this
public IEnumerable<string> GetKeys()
{
return _someDictionary.Keys;
}
Avoid using yield return when yo...
How to detect which one of the defined font was used in a web page?
...ty reliable way. Basically, an element is set to use a specific font and a string is set to that element. If the font set for the element does not exist, it takes the font of the parent element. So, what they do is measure the width of the rendered string. If it matches what they expected for the...