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SQLite add Primary Key
... is to create a new table with the correct requirements and copy your data into it, then drop the old table.
here is the official documentation about this: http://sqlite.org/faq.html#q11
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im...
Best introduction to C++ template metaprogramming? [closed]
...Mapping Integral Constants to Types", 2.6 "Type Selection", 2.7 "Detecting Convertibility and Inheritance at Compile Time", 2.9 "NullType and EmptyType" and 2.10 "Type Traits".
The best intermediate/advanced resource I've found is C++ Template Metaprogramming by David Abrahams and Aleksey Gurtovoy,...
What is makeinfo, and how do I get it?
...nfo File" of the Texinfo manual states that
makeinfo is a program that converts a Texinfo file into an Info file,
HTML file, or plain text.
The Texinfo home page explains that
Texinfo itself "is the official documentation format of the GNU project" and that it "uses a single source file to p...
Java Pass Method as Parameter
... of Java 8, lambda expressions are a nice solution as other answers have pointed out. The answer below was written for Java 7 and earlier...
Take a look at the command pattern.
// NOTE: code not tested, but I believe this is valid java...
public class CommandExample
{
public interface Comma...
What is the meaning of “__attribute__((packed, aligned(4))) ”
... Consider the following structure:
typedef struct
{
char Data1;
int Data2;
unsigned short Data3;
char Data4;
}sSampleStruct;
sizeof(sSampleStruct) will be 12 rather than 8. Because of structure padding. By default, In X86, structures will be padded to 4-byte alignment:
type...
Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT
I am fairly new to MySQL and I am getting a pretty interesting error on which I cannot find any help via google and the stackoverflow search.
...
Union Vs Concat in Linq
...tems), then items will not be compared by reference:
class X
{
public int ID { get; set; }
public override bool Equals(object obj)
{
X x = obj as X;
if (x == null)
return false;
return x.ID == ID;
}
public override int GetHashCode()
{
...
How to forward declare a C++ template class?
...ce the class you must include all of its arguments until the definition is introduced.
eg. Let's use std::vector without including it (the second argument of std::vector is defined with a default):
namespace std
{
template<typename, typename>
class vector;
}
#include <iostream>
...
Lambda expression vs method reference [closed]
...ight be too big, since it's an Android LiveData, inside a Fragment, that I converted to an Event which is triggered by a ViewModel...and the different behavior happens when Android goes back to the same Fragment...so I am having a hard time simplifying it for a question
– Mich...
How do I create a dictionary with keys from a list and values defaulting to (say) zero? [duplicate]
...
You should probably promote that comment into your actual answer. Also, from Python 2.7 and Python 3 you can do {el:0 for el in a}. (Feel free to add that into your answer as well.)
– Zooba
Oct 6 '10 at 4:37
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