andre/30-seconds-of-code
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Travis build: 1179

Browse Source
This commit is contained in:
30secondsofcode
2019-05-30 06:18:50 +00:00
parent e22e2251d2
commit 6b4b006ff1
6 changed files with 8 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
README.md
View File

@ -3416,6 +3416,7 @@ const createEventHub = () => ({
off(event, handler) {
const i = (this.hub[event] || []).findIndex(h => h === handler);
if (i > -1) this.hub[event].splice(i, 1);
if (this.hub[event].length === 0) delete this.hub[event];
}
});
```
@ -4738,6 +4739,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
const lengthIs4 = checkProp(l => l === 4, 'length');
lengthIs4([]); // false
lengthIs4([1,2,3,4]); // true

3
docs/browser.html
View File

@ -155,7 +155,8 @@ console<span class="token punctuation">.</span><span class="token function">log<
},</span>
<span class="token function">off</span><span class="token punctuation">(</span>event<span class="token punctuation">,</span> handler<span class="token punctuation">) {</span>
<span class="token keyword">const</span> i <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>hub<span class="token punctuation">[</span>event<span class="token punctuation">]</span> <span class="token operator">||</span> <span class="token punctuation">[]).</span><span class="token function">findIndex</span><span class="token punctuation">(</span>h <span class="token operator">=></span> h <span class="token operator">===</span> handler<span class="token punctuation">);</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span>i <span class="token operator">> -</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">this</span><span class="token punctuation">.</span>hub<span class="token punctuation">[</span>event<span class="token punctuation">].</span><span class="token function">splice</span><span class="token punctuation">(</span>i<span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">);
<span class="token keyword">if</span> <span class="token punctuation">(</span>i <span class="token operator">> -</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">this</span><span class="token punctuation">.</span>hub<span class="token punctuation">[</span>event<span class="token punctuation">].</span><span class="token function">splice</span><span class="token punctuation">(</span>i<span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">);</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>hub<span class="token punctuation">[</span>event<span class="token punctuation">].</span>length <span class="token operator">===</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token keyword">delete this</span><span class="token punctuation">.</span>hub<span class="token punctuation">[</span>event<span class="token punctuation">];
}
});</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token keyword">const</span> <span class="token function-variable function">handler</span> <span class="token operator">=</span> data <span class="token operator">=></span> console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>data<span class="token punctuation">);</span>

1
docs/function.html
View File

@ -155,6 +155,7 @@ console<span class="token punctuation">.</span><span class="token function">log<
<span class="token keyword">const</span> lengthIs4 <span class="token operator">=</span> <span class="token function">checkProp</span><span class="token punctuation">(</span>l <span class="token operator">=></span> l <span class="token operator">===</span> <span class="token number">4</span><span class="token punctuation">,</span> <span class="token string">'length'</span><span class="token punctuation">);</span>
<span class="token function">lengthIs4</span><span class="token punctuation">([]);</span> <span class="token comment">// false</span>
<span class="token function">lengthIs4</span><span class="token punctuation">([</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token number">4</span><span class="token punctuation">]);</span> <span class="token comment">// true</span>

1
snippets/checkProp.md
View File

@ -20,6 +20,7 @@ const checkProp = (predicate, prop) => obj => !!predicate(obj[prop]);
const lengthIs4 = checkProp(l => l === 4, 'length');
lengthIs4([]); // false
lengthIs4([1,2,3,4]); // true

1
test/_30s.js
View File

@ -205,6 +205,7 @@ const createEventHub = () => ({
off(event, handler) {
const i = (this.hub[event] || []).findIndex(h => h === handler);
if (i > -1) this.hub[event].splice(i, 1);
if (this.hub[event].length === 0) delete this.hub[event];
}
});
const currentURL = () => window.location.href;

2
vscode_snippets/snippets.json
View File

@ -423,7 +423,7 @@
" off(event, handler) {",
" const i = (this.hub[event] || []).findIndex(h => h === handler);",
" if (i > -1) this.hub[event].splice(i, 1);",
" if (this.hub[event].length === 0) delete this.hub[event];",
" if (this.hub[event].length === 0) delete this.hub[event]",
" }",
"});"
],