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Is String.Format as efficient as StringBuilder

... NOTE: This answer was written when .NET 2.0 was the current version. This may no longer apply to later versions. String.Format uses a StringBuilder internally: public static string Format(IFormatProvider provider, string format, params object[] ar...
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The input is not a valid Base-64 string as it contains a non-base 64 character

I have a REST service that reads a file and sends it to another console application after converting it to Byte array and then to Base64 string. This part works, but when the same stream is received at the application, it gets manipulated and is no longer a valid Base64 string. Some junk characters ...
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Is the 'type' attribute necessary for tags?

...s attribute. There is no default value for this attribute. For HTML 5, it is optional. If it is not specified, it defaults to text/javascript. Source The type attribute gives the language of the script or format of the data. If the attribute is present, its value must be a valid MIME type. T...
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jQuery - Detect value change on hidden input field

... So this is way late, but I've discovered an answer, in case it becomes useful to anyone who comes across this thread. Changes in value to hidden elements don't automatically fire the .change() event. So, wherever it is that you're setting that value, you also have to tell jQuery to t...
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Benefits of EBS vs. instance-store (and vice-versa) [closed]

I'm unclear as to what benefits I get from EBS vs. instance-store for my instances on Amazon EC2. If anything, it seems that EBS is way more useful (stop, start, persist + better speed) at relatively little difference in cost...? Also, is there any metric as to whether more people are using EBS now ...
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What is reflection and why is it useful?

What is reflection, and why is it useful? 21 Answers 21 ...
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A proper wrapper for console.log with correct line number?

I'm now developing an application, and place a global isDebug switch. I would like to wrap console.log for more convenient usage. ...
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Replace input type=file by an image

... people, I'd like to customize the ugly input type=file , and I know that it can't be done without some hacks and/or javascript . But, the thing is that in my case the upload file buttons are just for uploading images ( jpeg|jpg|png|gif ), so I was wondering if I could use a " clickable " image wh...
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Why does Google +1 record my mouse movements? [closed]

This is only on pages with a Google +1 box on my website: 9 Answers 9 ...
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How to output numbers with leading zeros in JavaScript [duplicate]

I can round to x amount of decimal places with math.round but is there a way to round left of the decimal? for example 5 becomes 05 if I specify 2 places ...