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Why is SELECT * considered harmful?
...tables, both of which contain a column called "ID". How would a consumer know which was which? SELECT * can also confuse views (at least in some versions SQL Server) when underlying table structures change -- the view is not rebuilt, and the data which comes back can be nonsense. And the worst pa...
Multiple commands in gdb separated by some sort of delimiter ';'?
...fter the last is \n.
set logging off
Done writing to gdb.txt; that file now contains a valid GDB command script:
#gdb#
whatis a
whatis b
whatis c
#gdb#
source gdb.txt
GDB now executes commands in the script which it just generated, producing the expected results:
type = ...
How to get users to read error messages?
...rror messages there will be...which implies...training and documentation...now this is a tricky one to get across...you don't want them to think that there will be 'issues' or 'glitches' and what to do in the event of that...they must not know that there will be possible errors, tricky indeed.
Alway...
Partly JSON unmarshal into a map in Go
...t as value identifier, telling the Go server what kind of value it is. By knowing what type of value, I can then proceed to JSON unmarshal the value into the correct type of struct.
...
Adding an identity to an existing column
...archar(10)
);
ALTER TABLE Test SWITCH TO Test2;
-- drop the original (now empty) table
DROP TABLE Test;
-- rename new table to old table's name
EXEC sp_rename 'Test2','Test';
-- update the identity seed
DBCC CHECKIDENT('Test');
-- see same records
SELECT * FROM Test;
This is obviou...
What is the difference between \r and \n?
... to start printing on the next line.
Obviously that's somewhat irrelevant now, although depending on the console you may still be able to use \r to move to the start of the line and overwrite the existing text.
More importantly, Unix tends to use \n as a line separator; Windows tends to use \r\n a...
Returning JSON from PHP to JavaScript?
...g together JSON by hand, under the assumption that was their only choice. Knowing it wasn't their only choice was a suitable solution. There is no obligation that the end result of that JSON will be emitted as HTTP response. The "add a header" information, while useful for one situation, is not goin...
Run java jar file on a server as background process
... Short answer: it depends on the server. Long answer: as far as I know, there is no safe way to shut down a process without the process supporting such graceful shut downs. For example, if it's a web server being terminated by an external signal, there is always a possibility that some reque...
ASP.NET Web API - PUT & DELETE Verbs Not Allowed - IIS 8
...dio 2012 RC. The installer also installs IIS 8 Express which Visual Studio now uses as the default web server.
19 Answers
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Using AES encryption in C#
...e);` . The reason for this is because in Encrypt you converted ToBase64 so now you need to ConvertFromBase64String in Decrypt, otherwise you get invalid length error.
– Euthyphro
Jan 6 '17 at 21:34
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