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How do I properly clean up Excel interop objects?
...Set = CharSet.Unicode)]
static extern IntPtr CreateJobObject(object a, string lpName);
[DllImport("kernel32.dll")]
static extern bool SetInformationJobObject(IntPtr hJob, JobObjectInfoType infoType, IntPtr lpJobObjectInfo, uint cbJobObjectInfoLength);
[DllImport("kernel32.dll", Set...
What are “connecting characters” in Java identifiers?
...ter.isJavaIdentifierStart(i)) {
System.out.println("character: " + String.valueOf(Character.toChars(i))
+ ", codepoint: " + i + ", hexcode: " + Integer.toHexString(i));
}
}
prints the connecting characters that can be used to start an identifer on jdk1.6.0_45
character...
What are the correct version numbers for C#?
...e methods, Static local functions and Enhancement of interpolated verbatim strings.
C# 9.0 still in preview. Expected to be released in November of 2020 along with .Net 5. Major new features: init-only properties, records, with-expressions, data classes, positional records, top-level programs, impro...
How to delete a file via PHP?
.../github.com/luyadev/luya/blob/master/core/helpers/FileHelper.php
* @param string $filename The file path to the file to delete.
* @return boolean Whether the file has been removed or not.
*/
function unlinkFile ( $filename ) {
// try to force symlinks
if ( is_link ($filename) ) {
...
Calling closure assigned to object property directly
...t;__invoke();
Of course that won't work if the callback is an array or a string (which can also be valid callbacks in PHP) - just for closures and other objects with __invoke behavior.
share
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imp...
How do I make my GUI behave well when Windows font scaling is greater than 100%
...nction StandardizeFormFont(AForm: TForm): Real;
var
preferredFontName: string;
preferredFontHeight: Integer;
begin
GetUserFontPreference({out}preferredFontName, {out}preferredFontHeight);
//e.g. "Segoe UI",
Result := Toolkit.StandardizeFormFont(AForm, PreferredFontName, Pre...
What is the difference between the bridge pattern and the strategy pattern?
...UML
Strategy Pattern in Swift:
protocol PrintStrategy {
func print(_ string: String) -> String
}
class Printer {
let strategy: PrintStrategy
init(strategy: PrintStrategy) {
self.strategy = strategy
}
func print(_ string: String) -> String {
return self.strategy....
Hidden Features of MySQL
...
Binary Protocol:
MySQL 4.1 introduced a binary protocol that allows non-string data values to be sent
and returned in native format without conversion to and from string format. (Very usefull)
Aside, mysql_real_query() is faster than mysql_query() because it does not call strlen()
to opera...
Get Enum from Description attribute [duplicate]
...static class EnumEx
{
public static T GetValueFromDescription<T>(string description) where T : Enum
{
foreach(var field in typeof(T).GetFields())
{
if (Attribute.GetCustomAttribute(field,
typeof(DescriptionAttribute)) is DescriptionAttribute attr...
mongodb/mongoose findMany - find all documents with IDs listed in array
... @chovy try converting them to ObjectIds first, instead of passing strings.
– Georgi Hristozov
Dec 2 '14 at 15:28
...