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Programmatic equivalent of default(Type)
...
Why not call the method that returns default(T) with reflection ? You can use GetDefault of any type with:
public object GetDefault(Type t)
{
return this.GetType().GetMethod("GetDefaultGeneric").MakeGenericMethod(t)....
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no
...our database. It may cause slower queries for a bit. In the end, it's your call though.
– Marnix van Valen
Dec 24 '19 at 13:22
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Bogus foreign key constraint fail
...ars that a new connection is opened for each query (bugs.mysql.com/bug.php?id=8280), making it neccessary to write all the drop statements in one query, eg.
SET FOREIGN_KEY_CHECKS=0;
DROP TABLE my_first_table_to_drop;
DROP TABLE my_second_table_to_drop;
SET FOREIGN_KEY_CHECKS=1;
Where the SE...
Should I instantiate instance variables on declaration or in the constructor?
...ad, the Java compiler generates instance-field initialization code automatically and puts it in the constructor or constructors for the class. The initialization code is inserted into a constructor in the order it appears in the source code, which means that a field initializer can use the initial v...
List of tables, db schema, dump etc using the Python sqlite3 API
...e';
job
t1
t2
snmptarget
t3
sqlite> .schema job
CREATE TABLE job (
id INTEGER PRIMARY KEY,
data VARCHAR
);
sqlite> select sql from sqlite_master where type = 'table' and name = 'job';
CREATE TABLE job (
id INTEGER PRIMARY KEY,
data VARCHAR
)
...
What's the best way to iterate an Android Cursor?
... Just to add a few cents... Don't check if cursor has data by calling moveToFirst() before you are going to iterate over cursor - you will lose the first entry
– AAverin
Nov 13 '13 at 16:36
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What should I name a table that maps two tables together? [closed]
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A Newspaper has many Readers and a Reader has many Newspapers
You could call the relationship NewspaperReader but a name like Subscription might convey better what the table is about.
The name Subscription also is more idiomatic in case you want to map the table to objects later on.
The convent...
How to check if object property exists with a variable holding the property name?
...roperty :
var loan = { amount: 150 };
if(Object.prototype.hasOwnProperty.call(loan, "amount"))
{
//will execute
}
Note: using Object.prototype.hasOwnProperty is better than loan.hasOwnProperty(..), in case a custom hasOwnProperty is defined in the prototype chain (which is not the case here...
Haskell Type vs Data Constructor
...a concrete type. Maybe Int and Maybe a are concrete types (or if you want, calls to type constructor functions that return concrete types.)
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Aliases in Windows command prompt
...EM Add other configurations as needed
IF EXIST "%USERPROFILE%\alias.cmd" ( CALL "%USERPROFILE%\alias.cmd" )
The registry key should be updated correspondly to C:\Users\Public\init.cmd or, using the .reg file:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Command Proc...