I think `Union[SomeType, None]` is more explicit about what it means.

It's just about the words and names. But those words can affect how you and your teammates think about the code.

#                                                     ------

suggest.popular.word.seed=0
suggest.popular.word.tags=
suggest.popular.word.fields=
suggest.popular.word.excludes=
suggest.popular.word.size=10
suggest.popular.word.window.size=30
suggest.popular.word.query.freq=10
suggest.min.hit.count=1
suggest.field.contents=_default
suggest.field.tags=label
suggest.field.roles=role

//
// On ARM, 386, and 32-bit MIPS, it is the caller's responsibility to arrange
// for 64-bit alignment of 64-bit words accessed atomically via the primitive
// atomic functions (types [Int64] and [Uint64] are automatically aligned).
// The first word in an allocated struct, array, or slice; in a global
// variable; or in a local variable (because the subject of all atomic operations

                } catch (final Exception e) {
                    logger.warn("Failed to read a sugget elevate word: {}", list, e);
                }
            }
            elevateWordBhv.refresh();
        } catch (final IOException e) {
            logger.warn("Failed to read a sugget elevate word.", e);
        }
    }

    public void exportCsv(final Writer writer) {

import (
	"fmt"
)

// Notes:
//  - Boolean types occupy the entire register. 0=false, 1=true.

// Suffixes encode the bit width of various instructions:
//
// D (double word) = 64 bit int
// W (word)        = 32 bit int
// H (half word)   = 16 bit int
// B (byte)        = 8 bit int
// S (single)      = 32 bit float
// D (double)      = 64 bit float
// L               = 64 bit int, used when the opcode starts with F

}

const (
	PT_TRACE_ME             = 0  // Debug this process
	PT_READ_I               = 1  // Read a full word
	PT_READ_D               = 2  // Read a full word
	PT_READ_U               = 3  // Read control info
	PT_WRITE_I              = 4  //Write a full word
	PT_WRITE_D              = 5  //Write a full word
	PT_CONTINUE             = 7  //Continue the process
	PT_KILL                 = 8  //Terminate the process

	if r.Method == "POST" {
		b = bufio.NewReader(r.Body)
	} else {
		b = bufio.NewReader(strings.NewReader(r.URL.RawQuery))
	}

	for {
		word, err := b.ReadSlice('+')
		if err == nil {
			word = word[0 : len(word)-1] // trim +
		}
		pc, _ := strconv.ParseUint(string(word), 0, 64)
		if pc != 0 {
			f := runtime.FuncForPC(uintptr(pc))
			if f != nil {
				fmt.Fprintf(&buf, "%#x %s\n", pc, f.Name())
			}
		}

	HasAVX5124VNNIW     bool // Advanced vector extension 512 Vector Neural Network Instructions Word variable precision
	HasAVX5124FMAPS     bool // Advanced vector extension 512 Fused Multiply Accumulation Packed Single precision
	HasAVX512VPOPCNTDQ  bool // Advanced vector extension 512 Double and quad word population count instructions
	HasAVX512VPCLMULQDQ bool // Advanced vector extension 512 Vector carry-less multiply operations

}

// mul sets y to y*H, where H is the GCM key, fixed during NewGCMWithNonceSize.
func (g *gcm) mul(y *gcmFieldElement) {
	var z gcmFieldElement

	for i := 0; i < 2; i++ {
		word := y.high
		if i == 1 {
			word = y.low
		}

		// Multiplication works by multiplying z by 16 and adding in
		// one of the precomputed multiples of H.
		for j := 0; j < 64; j += 4 {
			msw := z.high & 0xf
			z.high >>= 4

// which can express repetition compactly. In either form, the
// information is used by the runtime to initialize the heap bitmap,
// and for large types (like 128 or more words), they are roughly the
// same speed. GC programs are never much larger and often more
// compact. (If large arrays are involved, they can be arbitrarily
// more compact.)
//