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Permission denied on accessing host directory in Docker
.../db:/var/db:z rhel7 /bin/sh
Will automatically do the chcon -Rt svirt_sandbox_file_t /var/db
described in the man page.
Even better, you can use Z.
docker run -v /var/db:/var/db:Z rhel7 /bin/sh
This will label the content inside the container with the exact MCS
label that the c...
difference between collection route and member route in ruby on rails?
...st, not the collection of votes being created.The named path would be posts_votes_url, for example.
– George Shaw
Feb 21 '14 at 6:10
|
show ...
How do I list all cron jobs for all users?
...ce, and remove any spaces from the
# beginning of each line.
function clean_cron_lines() {
while read line ; do
echo "${line}" |
egrep --invert-match '^($|\s*#|\s*[[:alnum:]_]+=)' |
sed --regexp-extended "s/\s+/ /g" |
sed --regexp-extended "s/^ //"
...
JavaScript Date Object Comparison
...answered Sep 30 '11 at 6:50
gion_13gion_13
38.3k99 gold badges9090 silver badges101101 bronze badges
...
Best approach to converting Boolean object to string in java
... public static java.lang.String valueOf(boolean);
Code:
0: iload_0
1: ifeq 9
4: ldc #14 // String true
6: goto 11
9: ldc #10 // String false
11: areturn
$ ./javap.exe -c java.lang.Boo...
Go Unpacking Array As Arguments
...u can use a vararg syntax similar to C:
package main
import "fmt"
func my_func( args ...int) int {
sum := 0
for _,v := range args {
sum = sum + v
}
return sum;
}
func main() {
arr := []int{2,4}
sum := my_func(arr...)
fmt.Println("Sum is ", sum)
}
Now you can sum a...
How to convert array to SimpleXML
...
a short one:
<?php
$test_array = array (
'bla' => 'blub',
'foo' => 'bar',
'another_array' => array (
'stack' => 'overflow',
),
);
$xml = new SimpleXMLElement('<root/>');
array_walk_recursive($test_array, array ($xml, 'a...
View contents of database file in Android Studio
...; Tool Windows > Device File Explorer
Go to data > data > PACKAGE_NAME > database, where PACKAGE_NAME is the name of your package (it is com.Movie in the example above)
Right click on the database and select Save As.... Save it anywhere you want on your PC.
Now, open the SQLiteBro...
How do I pass the this context to a function?
...for a function.
var myfunc = function(){
alert(this.name);
};
var obj_a = {
name: "FOO"
};
var obj_b = {
name: "BAR!!"
};
Now you can call:
myfunc.call(obj_a);
Which would alert FOO. The other way around, passing obj_b would alert BAR!!. The difference between .call() and .appl...
How to create a private class method?
...ng a method on an explicit object (in your case self). You can use private_class_method to define class methods as private (or like you described).
class Person
def self.get_name
persons_name
end
def self.persons_name
"Sam"
end
private_class_method :persons_name
end
puts "Hey,...