kevin-smets

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Powerlevel10k

pythonicrubyist

# nil? can be used on any Ruby object. It returns true only if the object is nil.
nil.nil?   # => true 
[].nil?    # => false 
{}.nil?    # => false
"".nil?    # => false
" ".nil?   # => false
true.nil?  # => false

# empty? can be used on some Ruby objects including Arrays, Hashes and Strings. It returns true only if the object's length is zero.
nil.empty?   # NoMethodError: undefined method `empty?' for nil:NilClass

streeter

#import <objc/runtime.h>


static void SwizzleClassMethod(Class klass, SEL original, SEL new)
{
    Method origMethod = class_getClassMethod(klass, original);
    Method newMethod = class_getClassMethod(klass, new);

    if (class_addMethod(klass, original, method_getImplementation(newMethod), method_getTypeEncoding(newMethod))) {
        class_replaceMethod(klass, new, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));

roberto

<% flash.each do |type, message| %>
  <div class="alert <%= bootstrap_class_for(type) %> fade in">
    <button class="close" data-dismiss="alert">×</button>
    <%= message %>
  </div>
<% end %>