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How to grab substring before a specified character jQuery or JavaScript
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This will not work if the string being searched does not contain an instance of the search character. It will return an empty string.
– David G
Aug 20 '15 at 19:48
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How to get an absolute file path in Python
...its of the path (including the parent directory ".." element) and return a string. This is just a string computed from the current directory; any correlation to an actual file is accidental, it seems. Try os.path.abspath("/wow/junk/../blha/hooey"). It works.
– Mike S
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java.util.Date to XMLGregorianCalendar
...45.678Z
It’s the same as the latter of my example XMLGregorianCalendar strings above. As most of you know, it comes from Instant.toString being implicitly called by System.out.println. With java.time, in many cases we don’t need the conversions that in the old days we made between Date, Calend...
Check if EditText is empty. [closed]
... findViewById(R.id.editUsername);
sUsername = usernameEditText.getText().toString();
if (sUsername.matches("")) {
Toast.makeText(this, "You did not enter a username", Toast.LENGTH_SHORT).show();
return;
}
share
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Insert into … values ( SELECT … FROM … )
...2, someInt, someVarChar )
SELECT table2.column1, table2.column2, 8, 'some string etc.'
FROM table2
WHERE table2.ID = 7;
I've only used this syntax with Access, SQL 2000/2005/Express, MySQL, and PostgreSQL, so those should be covered. It should also work with SQLite3.
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Getting image dimensions without reading the entire file
... ImageDimensions
{
public static class ImageHelper
{
const string errorMessage = "Could not recognize image format.";
private static Dictionary<byte[], Func<BinaryReader, Size>> imageFormatDecoders = new Dictionary<byte[], Func<BinaryReader, Size>>()
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Why is parenthesis in print voluntary in Python 2.7?
..., expr2, ... exprn
(Each expression in turn is evaluated, converted to a string and displayed with a space between them.)
But remember that putting parentheses around an expression is still the same expression.
So you can also write this as:
print (expr1), (expr2), ... (expr3)
This has nothin...
App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
... should use a wide viewport.
UserAgent
Sets the WebView’s user-agent string. If the string is null or empty, the system default value will be used.
UsesLocation
Whether or not to give the application permission to use the Javascript geolocation API
VibrationEnabled
Returns whether vibr...
Constructor of an abstract class in C#
...at class call the base constructor.
public abstract class A{
private string data;
protected A(string myString){
data = myString;
}
}
public class B : A {
B(string myString) : base(myString){}
}
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Debugging Package Manager Console Update-Database Seed Method
...figuration<TContext>();
Database.Delete("TestDatabaseNameOrConnectionString");
var databaseMigrator = new DbMigrator(configuration);
databaseMigrator.Update();
Database.Delete("TestDatabaseNameOrConnectionString");
But be careful not to run this against your development database!
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