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How to exit git log or git diff [duplicate]
... just printed to the terminal define the environment variable GIT_PAGER to cat or set core.pager to cat (execute git config --global core.pager cat).
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When should I use the Visitor Design Pattern? [closed]
...rarchy of animals
class Animal { };
class Dog: public Animal { };
class Cat: public Animal { };
(Suppose it is a complex hierarchy with a well-established interface.)
Now we want to add a new operation to the hierarchy, namely we want each animal to make its sound. As far as the hierarchy is ...
Inheritance vs. Aggregation [closed]
...y to keep the correlation logical. Then we have a big nasty smell that indicates that we had to use aggregation.
If we have used aggregation (or we plan to use it) but we find out we need to copy almost all of the functionality. Then we have a smell that points in the direction of inheritance.
To ...
What is the rationale behind having companion objects in Scala?
...me = "dog"
}
class Dog extends Animal
{
def companion = Dog
}
object Cat extends AnimalCounter
{
val name = "cat"
}
class Cat extends Animal
{
def companion = Cat
}
Which produces this output:
scala> new Dog
1 dogs created so far
scala> new Cat
1 cats created so far
scala&g...
Looping through the content of a file in Bash
...nto this while loop, so the 'read' command has something to consume." My "cat" method is similar, sending the output of a command into the while block for consumption by 'read', too, only it launches another program to get the work done.
– Warren Young
Oct 5 '...
Working with huge files in VIM
...LPART using your favourite editor.
Combine the file:
(head -n 3 HUGEFILE; cat SMALLPART; sed -e '1,5d' HUGEFILE) > HUGEFILE.new
i.e: pick all the lines before the edited lines from the HUGEFILE (which in this case is the top 3 lines), combine it with the edited lines (in this case lines 4 an...
Write to file, but overwrite it if it exists
...
#!/bin/bash
cat <<EOF > SampleFile
Put Some text here
Put some text here
Put some text here
EOF
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Polymorphism with gson
...ic interface IAnimal { public String sound(); }
The two derived classes, Cat:
public class Cat implements IAnimal {
public String name;
public Cat(String name) {
super();
this.name = name;
}
@Override
public String sound() {
return name + " : \"meaow...
Looking for ALT+LeftArrowKey solution in zsh
...
Run cat then press keys to see the codes your shortcut send.
(Press Ctrl+C to kill the cat when you're done.)
For me, (ubuntu, konsole, xterm) pressing Alt+← sends ^[[1;3D, so i would put in my .zshrc
bindkey "^[[1;3C" forward...
How expensive is RTTI?
...ame refers to the original development architecture, though the ABI specification works on lots of architectures including i686/x86_64. Comments in GCC's internal source and STL code refer to Itanium as the "new" ABI in contrast to the "old" one they used before. Worse, the "new"/Itanium ABI refers ...