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merging issue #1127

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This commit is contained in:
Jeremy Ashkenas 2011-04-20 23:12:05 -04:00
parent ff8c340330
commit 4e3f80749f
3 changed files with 12 additions and 12 deletions
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6
documentation/js/existence.js
View file

@ -1,10 +1,10 @@
var footprints, solipsism;
if ((typeof mind != "undefined" && mind != null) && !(typeof world != "undefined" && world != null)) {
if ((typeof mind != "undefined" && mind !== null) && !(typeof world != "undefined" && world !== null)) {
solipsism = true;
}
if (typeof speed != "undefined" && speed != null) {
if (typeof speed != "undefined" && speed !== null) {
speed;
} else {
speed = 75;
};
footprints = typeof yeti != "undefined" && yeti != null ? yeti : "bear";
footprints = typeof yeti != "undefined" && yeti !== null ? yeti : "bear";

2
documentation/js/overview.js
View file

@ -21,7 +21,7 @@ race = function() {
winner = arguments[0], runners = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
return print(winner, runners);
};
if (typeof elvis != "undefined" && elvis != null) {
if (typeof elvis != "undefined" && elvis !== null) {
alert("I knew it!");
}
cubes = (function() {

16
index.html
View file

@ -170,7 +170,7 @@ math <span class="Keyword">=</span> {
winner <span class="Keyword">=</span> arguments[<span class="Number">0</span>], runners <span class="Keyword">=</span> <span class="Number">2</span> <span class="Keyword">&lt;=</span> arguments.<span class="LibraryConstant">length</span> ? __slice.<span class="LibraryFunction">call</span>(arguments, <span class="Number">1</span>) : [];
<span class="Keyword">return</span> <span class="LibraryFunction">print</span>(winner, runners);
};
<span class="Keyword">if</span> (<span class="Keyword">typeof</span> elvis <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> elvis <span class="Keyword">!</span><span class="Keyword">=</span> <span class="BuiltInConstant">null</span>) {
<span class="Keyword">if</span> (<span class="Keyword">typeof</span> elvis <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> elvis <span class="Keyword">!</span><span class="Keyword">==</span> <span class="BuiltInConstant">null</span>) {
<span class="LibraryFunction">alert</span>(<span class="String"><span class="String">&quot;</span>I knew it!<span class="String">&quot;</span></span>);
}
cubes <span class="Keyword">=</span> (<span class="Storage">function</span>() {
@ -205,7 +205,7 @@ race = function() {
winner = arguments[0], runners = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
return print(winner, runners);
};
if (typeof elvis != "undefined" && elvis != null) {
if (typeof elvis != "undefined" && elvis !== null) {
alert("I knew it!");
}
cubes = (function() {
@ -1201,25 +1201,25 @@ footprints <span class="Keyword">=</span> yeti <span class="Keyword">?</span> <s
</pre><pre class="idle"><span class="Storage">var</span> footprints, solipsism;
<span class="Keyword">if</span> ((<span class="Keyword">typeof</span> mind <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> mind <span class="Keyword">!</span><span class="Keyword">=</span> <span class="BuiltInConstant">null</span>) <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> <span class="Keyword">!</span>(<span class="Keyword">typeof</span> world <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> world <span class="Keyword">!</span><span class="Keyword">=</span> <span class="BuiltInConstant">null</span>)) {
<span class="Keyword">if</span> ((<span class="Keyword">typeof</span> mind <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> mind <span class="Keyword">!</span><span class="Keyword">==</span> <span class="BuiltInConstant">null</span>) <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> <span class="Keyword">!</span>(<span class="Keyword">typeof</span> world <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> world <span class="Keyword">!</span><span class="Keyword">==</span> <span class="BuiltInConstant">null</span>)) {
solipsism <span class="Keyword">=</span> <span class="BuiltInConstant">true</span>;
}
<span class="Keyword">if</span> (<span class="Keyword">typeof</span> speed <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> speed <span class="Keyword">!</span><span class="Keyword">=</span> <span class="BuiltInConstant">null</span>) {
<span class="Keyword">if</span> (<span class="Keyword">typeof</span> speed <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> speed <span class="Keyword">!</span><span class="Keyword">==</span> <span class="BuiltInConstant">null</span>) {
speed;
} <span class="Keyword">else</span> {
speed <span class="Keyword">=</span> <span class="Number">75</span>;
};
footprints <span class="Keyword">=</span> <span class="Keyword">typeof</span> yeti <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> yeti <span class="Keyword">!</span><span class="Keyword">=</span> <span class="BuiltInConstant">null</span> ? yeti : <span class="String"><span class="String">&quot;</span>bear<span class="String">&quot;</span></span>;
footprints <span class="Keyword">=</span> <span class="Keyword">typeof</span> yeti <span class="Keyword">!</span><span class="Keyword">=</span> <span class="String"><span class="String">&quot;</span>undefined<span class="String">&quot;</span></span> <span class="Keyword">&amp;</span><span class="Keyword">&amp;</span> yeti <span class="Keyword">!</span><span class="Keyword">==</span> <span class="BuiltInConstant">null</span> ? yeti : <span class="String"><span class="String">&quot;</span>bear<span class="String">&quot;</span></span>;
</pre><script>window.example21 = "solipsism = true if mind? and not world?\n\nspeed ?= 75\n\nfootprints = yeti ? \"bear\"\n\nalert footprints"</script><div class='minibutton load' onclick='javascript: loadConsole(example21);'>load</div><div class='minibutton ok' onclick='javascript: var footprints, solipsism;
if ((typeof mind != "undefined" && mind != null) && !(typeof world != "undefined" && world != null)) {
if ((typeof mind != "undefined" && mind !== null) && !(typeof world != "undefined" && world !== null)) {
solipsism = true;
}
if (typeof speed != "undefined" && speed != null) {
if (typeof speed != "undefined" && speed !== null) {
speed;
} else {
speed = 75;
};
footprints = typeof yeti != "undefined" && yeti != null ? yeti : "bear";;alert(footprints);'>run: footprints</div><br class='clear' /></div>
footprints = typeof yeti != "undefined" && yeti !== null ? yeti : "bear";;alert(footprints);'>run: footprints</div><br class='clear' /></div>
<p>
The accessor variant of the existential operator <tt>?.</tt> can be used to soak
up null references in a chain of properties. Use it instead