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class
...lt; self opens up self's singleton class, so that methods can be redefined for the current self object (which inside a class or module body is the class or module itself). Usually, this is used to define class/module ("static") methods:
class String
class << self
def value_of obj
...
Is Chrome's JavaScript console lazy about evaluating arrays?
...
Thanks for the comment, tec. I was able to find an existing unconfirmed Webkit bug that explains this issue: https://bugs.webkit.org/show_bug.cgi?id=35801 (EDIT: now fixed!)
There appears to be some debate regarding just how much ...
Binding a WPF ComboBox to a custom list
...space WpfApplication6
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
ConnectionViewModel vm = new ConnectionViewModel();
...
When do we need curly braces around shell variables?
...ambiguous cases, can be considered good programming practice. This is both for consistency and to avoid surprises like $foo_$bar.jpg, where it's not visually obvious that the underscore becomes part of the variable name.
sha...
How to match a String against string literals in Rust?
...nk the match fails because of whitespace that trim() removes. This is nice for deferencing to match against user input.
– Gerard Sexton
Sep 20 '16 at 13:25
1
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Convert XML to JSON (and back) using Javascript
...
thanks for the reply! In my case, the JSON is the canonical representation, and XML is just used for XSLT.. the use of which is not my idea! :)
– Jason Suárez
Nov 20 '09 at 23:29
...
Change MySQL default character set to UTF-8 in my.cnf?
...tf8'
character-set-server = utf8
If you want to change the character set for an existing DB, let me know... your question didn't specify it directly so I am not sure if that's what you want to do.
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How to efficiently compare two unordered lists (not sets) in Python?
...ef compare(s, t):
t = list(t) # make a mutable copy
try:
for elem in s:
t.remove(elem)
except ValueError:
return False
return not t
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Calling shell functions with xargs
...ted out by @Sasha.
Here is an example why you should not use the embedded format:
$ echo '$(date)' | xargs -I {} bash -c 'echo_var "{}"'
Sun Aug 18 11:56:45 CDT 2019
Another example of why not:
echo '\"; date\"' | xargs -I {} bash -c 'echo_var "{}"'
This is what is output using the safe forma...
How can I search for a multiline pattern in a file?
...
Why don't you go for awk:
awk '/Start pattern/,/End pattern/' filename
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