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Do you use NULL or 0 (zero) for pointers in C++?
...ger. In pre-standard code, NULL was/is sometimes defined to something unsuitable and therefore had/has to be avoided. That's less common these days.
If you have to name the null pointer, call it nullptr; that's what it's called in C++11. Then, nullptr will be a keyword.
That said, don't sweat the s...
PL/SQL, how to escape single quote in a string?
...ting data.
Here's a very quick example:
Lets say we have a very simple table, Customers, that has 2 columns, FirstName and LastName. We need to move the data into Customers2, so we need to generate a bunch of INSERT statements.
Select 'INSERT INTO Customers2 (FirstName, LastName) ' ||
'...
When would you use delegates in C#? [closed]
... is extremely handy (although the example is a little contrived).
string sTableName = "test";
string sQuery = "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME='" + sTableName + "'";
DataProvider.UseReader( sQuery,
delegate( System.Data.IDataReader reader )
{
Con...
INSERT … ON DUPLICATE KEY (do nothing)
I have a table with a unique key for two columns:
3 Answers
3
...
Backwards migration with Django South
...ur_app, South runs all new migrations, in order. (It looks at the database tables to decide which ones are 'new').
However, you can also specify any migration by number, and South will migrate your database, either forward or backward, to take it to that point. So, with the example files above, if ...
Convert varchar to uniqueidentifier in SQL Server
A table I have no control of the schema for, contains a column defined as varchar(50) which stores uniqueidentifiers in the format 'a89b1acd95016ae6b9c8aabb07da2010' (no hyphens)
...
How do you convert Html to plain text?
I have snippets of Html stored in a table. Not entire pages, no tags or the like, just basic formatting.
19 Answers
...
How can I do string interpolation in JavaScript?
...ring literal? For example, if one had a json file containing a translation table that needed values interpolated into them for display purposes? I think the first solution probably works well for this situation, but I do like the new string template syntax in general.
– nbering...
Sending HTTP POST Request In Java
...e, using a PrintWriter totally fails.
– Little Bobby Tables
Dec 16 '11 at 8:35
5
and how to set 2...
Reliable method to get machine's MAC address in C#
...d be many active connections on a machine and their order may not be predictable.
– Dave R.
Mar 9 '11 at 15:33
@DaveR....