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Difference between StringBuilder and StringBuffer
...ng. Actually, I flipped the test, and appended a random string and got the opposite test. Goes to say, that one cannot trust simple benchmarks. The opposite shows StringBuffer is faster. 5164 for StringBuilder vs 3699 for StringBuffer hastebin.com/piwicifami.avrasm
– mmm
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How to validate an email address using a regular expression?
... get your confirmation email, and then where are they? They're not on your site any more and they're wondering why they couldn't sign up. Actually no they're not - they've completely forgotten about you. However, if you could just do a basic sanity check with a regex while they're still with you, th...
How to ISO 8601 format a Date with Timezone Offset in JavaScript?
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getTimezoneOffset() returns the opposite sign of the format required by the spec that you referenced.
This format is also known as ISO8601, or more precisely as RFC3339.
In this format, UTC is represented with a Z while all other formats are represented b...
Can someone explain this 'double negative' trick? [duplicate]
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A logical NOT operator ! converts a value to a boolean that is the opposite of its logical value.
The second ! converts the previous boolean result back to the boolean representation of its original logical value.
From these docs for the Logical NOT operator:
Returns false if its sin...
Checkstyle vs. PMD
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Oddly enough I've had the exact opposite experience with PMD vs Checkstyle. PMD often reports false positives if it's something checkstyle or Findbugs didn't find. 7 years can matter a lot though.
– xenoterracide
May 1...
File is universal (three slices), but it does not contain a(n) ARMv7-s slice error for static librar
...appy to tell you that the work is done and the SDK is now available on the site.
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Android emulator shows nothing except black screen and adb devices shows “device offline”
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For me it's the opposite - I have to turn "HOST GPU" on to make it work. Only problem is that I can't take screenshots in that mode :/
– Elad Avron
Oct 29 '13 at 13:04
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When should I use Inline vs. External Javascript?
...ertain cases, especially very small pieces of code, inlining them into the site’s HTML makes sense.
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When to choose checked and unchecked exceptions
...when you don't see any way around it)
There's a very strong case for the opposite: Never use checked exceptions. I'm reluctant to take sides in the debate but there seems to be a broad consensus that introducing checked exceptions was a wrong decision in hindsight. Please don't shoot the messenger...
How to get the file name from a full path using JavaScript?
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According to this site, using replace is much slower than substr, which can be used in conjunction with lastIndexOf('/')+1: jsperf.com/replace-vs-substring
– Nate
Aug 3 '14 at 1:39
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