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Why use double indirection? or Why use pointers to pointers?
When should a double indirection be used in C? Can anyone explain with a example?
18 Answers
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Unstaged changes left after git reset --hard
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This works, but I do not exactly understand why. Anyone care to explain each command?
– Edwin Stoteler
Mar 20 '15 at 14:04
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How do I install pip on macOS or OS X?
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⚡️ TL;DR — One line solution.
All you have to do is:
sudo easy_install pip
2019: ⚠️easy_install has been deprecated. Check Method #2 below for preferred installation!
I made a gif, coz. why not?
Details:
⚡️ OK, ...
Must JDBC Resultsets and Statements be closed separately although the Connection is closed afterward
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What you have done is perfect and very good practice.
The reason I say its good practice... For example, if for some reason you are using a "primitive" type of database pooling and you call connection.close(), the connection will be return...
Unable to import a module that is definitely installed
.../python2.6/site-packages/
Save the file, restart the Terminal, and you're done
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How can I Remove .DS_Store files from a Git repository?
...it-rm once for every .DS_Store file, while xargs will put all the paths on one command line. Mostly I prefer xargs because I don't have to worry about escaping a lot of special characters.
– benzado
Sep 21 '08 at 7:13
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Should methods in a Java interface be declared with or without a public access modifier?
...ecially for each interface. The following example could easily confuse someone, who is not 100% fluent in Java:
public interface Foo{
public void MakeFoo();
void PerformBar();
}
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Java “Virtual Machine” vs. Python “Interpreter” parlance?
...ny statically-typed code interactively
would be tedious, so it just isn't done that way.
In the Java world, the virtual machine steals the show because it runs programs
written in a language which can actually be compiled into machine instructions,
and the result is speed and resource efficiency. ...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...NULL into a column with a NOT NULL constraint.
Inserting a row to a partitioned table, but the values you insert don't map to a partition.
If you use REPLACE, MySQL actually does a DELETE followed by an INSERT internally, which has some unexpected side effects:
A new auto-increment ID is alloc...
How to remove item from list in C#?
...r filtered = result.Where(f => f.ID != 2); returns all items except the one with ID 2
Detailed answer:
I think .RemoveAll() is very flexible, because you can have a list of item IDs which you want to remove - please regard the following example.
If you have:
class myClass {
public int ID; pub...