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| 1 <!--{ | 1 <!--{ |
| 2 "Title": "The Go Programming Language Specification", | 2 "Title": "The Go Programming Language Specification", |
| 3 "Subtitle": "Version of February 29, 2012" | 3 "Subtitle": "Version of February 29, 2012" |
| 4 }--> | 4 }--> |
| 5 | 5 |
| 6 <!-- | 6 <!-- |
| 7 TODO | 7 TODO |
| 8 [ ] need language about function/method calls and parameter passing rules | 8 [ ] need language about function/method calls and parameter passing rules |
| 9 [ ] last paragraph of #Assignments (constant promotion) should be elsewhere | 9 [ ] last paragraph of #Assignments (constant promotion) should be elsewhere |
| 10 and mention assignment to empty interface. | 10 and mention assignment to empty interface. |
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| 4887 delete(m, k) // remove element m[k] from map m | 4887 delete(m, k) // remove element m[k] from map m |
| 4888 </pre> | 4888 </pre> |
| 4889 | 4889 |
| 4890 <p> | 4890 <p> |
| 4891 If the element <code>m[k]</code> does not exist, <code>delete</code> is | 4891 If the element <code>m[k]</code> does not exist, <code>delete</code> is |
| 4892 a no-op. Calling <code>delete</code> with a nil map causes a | 4892 a no-op. Calling <code>delete</code> with a nil map causes a |
| 4893 <a href="#Run_time_panics">run-time panic</a>. | 4893 <a href="#Run_time_panics">run-time panic</a>. |
| 4894 </p> | 4894 </p> |
| 4895 | 4895 |
| 4896 | 4896 |
| 4897 <h3 id="Complex_numbers">Assembling and disassembling complex numbers</h3> | 4897 <h3 id="Complex_numbers">Manipulating complex numbers</h3> |
| 4898 | 4898 |
| 4899 <p> | 4899 <p> |
| 4900 Three functions assemble and disassemble complex numbers. | 4900 Three functions assemble and disassemble complex numbers. |
| 4901 The built-in function <code>complex</code> constructs a complex | 4901 The built-in function <code>complex</code> constructs a complex |
| 4902 value from a floating-point real and imaginary part, while | 4902 value from a floating-point real and imaginary part, while |
| 4903 <code>real</code> and <code>imag</code> | 4903 <code>real</code> and <code>imag</code> |
| 4904 extract the real and imaginary parts of a complex value. | 4904 extract the real and imaginary parts of a complex value. |
| 4905 </p> | 4905 </p> |
| 4906 | 4906 |
| 4907 <pre class="grammar"> | 4907 <pre class="grammar"> |
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| 5481 | 5481 |
| 5482 <p> | 5482 <p> |
| 5483 A struct or array type has size zero if it contains no fields (or elements, resp
ectively) that have a size greater than zero. Two distinct zero-size variables m
ay have the same address in memory. | 5483 A struct or array type has size zero if it contains no fields (or elements, resp
ectively) that have a size greater than zero. Two distinct zero-size variables m
ay have the same address in memory. |
| 5484 </p> | 5484 </p> |
| 5485 | 5485 |
| 5486 | 5486 |
| 5487 <h2 id="Implementation_differences">Implementation differences - TODO</h2> | 5487 <h2 id="Implementation_differences">Implementation differences - TODO</h2> |
| 5488 <ul> | 5488 <ul> |
| 5489 <li><span class="alert"><code>len(x)</code> is only a constant if <code>
x</code> is a (qualified) identifier denoting an array or pointer to an array.</
span></li> | 5489 <li><span class="alert"><code>len(x)</code> is only a constant if <code>
x</code> is a (qualified) identifier denoting an array or pointer to an array.</
span></li> |
| 5490 </ul> | 5490 </ul> |
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