README.org

Commercial Break

My talk at Rubyshift Munich <2015-10-14>

The slides are built with org-isolide. (@kuanyui == the best)

Hello!

Doublehelix

Go delete your Netflix account

Rails

class String
  BLANK_RE = /\A[[:space:]]*\z/
  def blank?
    BLANK_RE === self
  end
end

fast blank Gem

static VALUE
rb_str_blank_as(VALUE str)
{
  rb_encoding *enc;
  char *s, *e;

  enc = STR_ENC_GET(str);
  s = RSTRING_PTR(str);
  if (!s || RSTRING_LEN(str) == 0) return Qtrue;

  e = RSTRING_END(str);
  while (s < e) {
    int n;
    unsigned int cc = rb_enc_codepoint_len(s, e, &n, enc);

    switch (cc) {
      case 9:
      case 0xa:
      case 0xb:
      case 0xc:
      case 0xd:
      case 0x20:
      case 0x85:
      case 0xa0:
      case 0x1680:
      case 0x2000:
      case 0x2001:
      case 0x2002:
      case 0x2003:
      case 0x2004:
      case 0x2005:
      case 0x2006:
      case 0x2007:

Rust

extern crate libc;
mod buf; // a small buffer struct + impl, not shown
use buf::Buf;

#[no_mangle]
pub extern "C" fn tr_str_is_blank(b: Buf) -> bool {
    let s = b.as_slice().unwrap();

    s.chars().all(|c| c.is_whitespace())
}

Next: 32C3

32C3

Rubytown

Finally

The motivational part

Just do it

It’s not that hard.

• It’s not about making people look up to you.
• Quantity literally means nothing.
• Nobody has your exact background.
• The best stories aren’t about Ruby, but about Rubyists.
• Reach out for feedback & counseling.
• It’s doable. I could, so can you.

Klaus

Thanks

I’m looking forward to your next talk

Attribution:

• 31C3 Photo by Heipei.
• Rubytown by Railsgirls.
• Motivational by Profound Programmer.