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What is the rationale behind having companion objects in Scala?
...me = "dog"
}
class Dog extends Animal
{
def companion = Dog
}
object m>Cat m> extends AnimalCounter
{
val name = "m>cat m>"
}
class m>Cat m> extends Animal
{
def companion = m>Cat m>
}
Which produces this output:
scala> new Dog
1 dogs created so far
scala> new m>Cat m>
1 m>cat m>s created so far
scala&g...
How can I find the version of the Fedora I use?
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m>cat m> /etc/issue
Or m>cat m> /etc/fedora-release as suggested by @Bruce ONeel
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Is there a Unix utility to prepend timestamps to stdin?
...ash is. I didn't think there would be such an easy solution for this complim>cat m>ed task.
– recluze
Sep 11 '12 at 10:58
2
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Stop pip from failing on single package when installing with requirements.txt
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Running each line with pip install may be a workaround.
m>cat m> requirements.txt | xargs -n 1 pip install
Note: -a parameter is not available under MacOS, so old m>cat m> is more portable.
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When should I use the Visitor Design Pattern? [closed]
...rarchy of animals
class Animal { };
class Dog: public Animal { };
class m>Cat m>: 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 ...
Count all occurrences of a string in lots of files with grep
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m>cat m> * | grep -c string
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
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In your table dbo.Sup_Item_m>Cat m>, it has a foreign key reference to another table. The way a FK works is it cannot have a value in that column that is not also in the primary key column of the referenced table.
If you have SQL Server Management Studio, ...
How to get the first line of a file in a bash script?
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@sorin, m>cat m> ... | read VAR will fail in most shells (all except zsh as far as I know) because each of the components in a pipe will run in separate subshells. Meaning that $VAR will be set in subshell (that cease to exist as soon as ...
How to find out what group a given user has?
... format.
sh collection.sh
#!/bin/bash
HOSTNAME=`hostname -s`
for i in `m>cat m> /etc/passwd| grep -vE "nologin|shutd|hal|sync|root|false"|awk -F':' '{print$1}' | sed 's/[[:space:]]/,/g'`; do groups $i; done|sed s/\:/\,/g|tr -d ' '|sed -e "s/^/$HOSTNAME,/"> /tmp/"$HOSTNAME"_inventory.txt
sudo m>cat m> ...
How to redirect output of an already running process [duplim>cat m>e]
...e Redirecting Output from a Running Process.
Firstly I run the command m>cat m> > foo1 in one session and test that data from stdin is copied to the file. Then in another session I redirect the output.
Firstly find the PID of the process:
$ ps aux | grep m>cat m>
rjc 6760 0.0 0.0 1580 376 pts/5 S...