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What's the difference between using “let” and “var”?

...s that the scope of a var variable is the entire enclosing function This table on Wikipedia shows which browsers support Javascript 1.7. Note that only Mozilla and Chrome browsers support it. IE, Safari, and potentially others don't. ...
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How to fully remove Xcode 4

I want to remove all existing SDK versions as well as Xcode 4. 7 Answers 7 ...
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NSAttributedString add text alignment

...paragraphRef}; NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:@"Hello World" attributes:attributes]; share | improve this answer | follow ...
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How to include JavaScript file or library in Chrome console?

... aware of the fact that even getElementById() doesn't work consistently on all browsers - see this answer for details.) UPDATE: It's been years since I wrote this answer and I think it's worth pointing out here that today you can use: SystemJS ModuleLoader jspm.io to dynamically load scripts...
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How can I find where I will be redirected using cURL?

...topt($ch, CURLOPT_FOLLOWLOCATION, true); Erm... I don't think you're actually executing the curl... Try: curl_exec($ch); ...after setting the options, and before the curl_getinfo() call. EDIT: If you just want to find out where a page redirects to, I'd use the advice here, and just use Curl to ...
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Extract value of attribute node via XPath

... With xqilla it was necessary to call xs:string. I wonder why. – krlmlr Jul 22 '13 at 20:00 1 ...
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Should a return statement be inside or outside a lock?

...als init ( [0] int32 CS$1$0000, [1] object CS$2$0001) L_0000: ldsfld object Program::sync L_0005: dup L_0006: stloc.1 L_0007: call void [mscorlib]System.Threading.Monitor::Enter(object) L_000c: call int32 Program::GetValue() L_0011: stloc.0 L_0012: leav...
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java.util.regex - importance of Pattern.compile()?

... The compile() method is always called at some point; it's the only way to create a Pattern object. So the question is really, why should you call it explicitly? One reason is that you need a reference to the Matcher object so you can use its methods, like...
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iPhone Data Usage Tracking/Monitoring

... The thing is that pdp_ip0 is one of interfaces, all pdpXXX are WWAN interfaces dedicated to different functions, voicemail, general networking interface. I read in Apple forum that : The OS does not keep network statistics on a process-by-process basis. As such, there's n...
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Formatting numbers (decimal places, thousands separators, etc) with CSS

.... https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString share | improve this answer | follow | ...