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String formatting named parameters?
...tring formatting method.
print('<a href="{0}">{0}</a>'.format(my_url))
which saves you from repeating the argument, or
print('<a href="{url}">{url}</a>'.format(url=my_url))
if you want named parameters.
print('<a href="{}">{}</a>'.format(my_url, my_url))
...
What exactly does Perl's “bless” do?
...
In general, bless associates an object with a class.
package MyClass;
my $object = { };
bless $object, "MyClass";
Now when you invoke a method on $object, Perl know which package to search for the method.
If the second argument is omitted, as in your example, the current package/cla...
Solving a “communications link failure” with JDBC and MySQL [duplicate]
I'm trying to connect to the local MySQL server but I keep getting an error.
25 Answers
...
could not resolve host github.com error while cloning remote repository in git
...ote repository on Github and I am trying to clone the remote repository on my local machine. While cloning I am providing the clone URL & target folder.
...
Proper Repository Pattern Design in PHP?
...
I thought I'd take a crack at answering my own question. What follows is just one way of solving the issues 1-3 in my original question.
Disclaimer: I may not always use the right terms when describing patterns or techniques. Sorry for that.
The Goals:
Create a...
MySQL Error 1153 - Got a packet bigger than 'max_allowed_packet' bytes
I'm importing a MySQL dump and getting the following error.
14 Answers
14
...
Best practice to run Linux service as a different user
Services default to starting as root at boot time on my RHEL box. If I recall correctly, the same is true for other Linux distros which use the init scripts in /etc/init.d .
...
How do I remove duplicate items from an array in Perl?
...ou can do something like this as demonstrated in perlfaq4:
sub uniq {
my %seen;
grep !$seen{$_}++, @_;
}
my @array = qw(one two three two three);
my @filtered = uniq(@array);
print "@filtered\n";
Outputs:
one two three
If you want to use a module, try the uniq function from List::Mor...
How do I make a list of data frames?
...3), y2 = c(4, 5, 6))
d2 <- data.frame(y1 = c(3, 2, 1), y2 = c(6, 5, 4))
my.list <- list(d1, d2)
You access the data frames just like you would access any other list element:
my.list[[1]]
# y1 y2
# 1 1 4
# 2 2 5
# 3 3 6
...
How to check if a string contains a substring in Bash
...cards) outside a case statement, too, if you use double brackets:
string='My long string'
if [[ $string == *"My long"* ]]; then
echo "It's there!"
fi
Note that spaces in the needle string need to be placed between double quotes, and the * wildcards should be outside. Also note that a simple com...