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Error when trying to obtain a certificate: The specified item could not be found in the keychain

I was having a problem with codesigning my apps, so I deleted all the keys from the keychain. Then I went to Certificate Assistant => Request a certificate from a Certificate Authority (to create CSR for a new certificate). ...
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Why use a READ UNCOMMITTED isolation level?

... This isolation level allows dirty reads. One transaction may see uncommitted changes made by some other transaction. To maintain the highest level of isolation, a DBMS usually acquires locks on data, which may result in a loss of concurrency and...
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i18n Pluralization

...orry but this just doesn't work with lots of languages. Pluralization is really complex, see translate.sourceforge.net/wiki/l10n/pluralforms Due to this I think that my answer is more appropriate. – sorin May 29 '11 at 6:55 ...
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Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into

...20 This solution necessarily comes nine years after the question was originally asked, because until fairly recently, most browsers have not been able to handle favicons in .svg format. That's not the case anymore. See: https://caniuse.com/#feat=link-icon-svg 1) Choose SVG as the Favicon format Rig...
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git mv and only change case of directory

...e case there and not have the wrong case appear anywhere in the history at all. You have to be careful if you do this as the commit hashes from then on will be different and others will have to rebase or re-merge their work with that recent past of the branch. This is related to correcting the name...
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What's the best UML diagramming tool? [closed]

I'm trying to choose a tool for creating UML diagrams of all flavours. Usability is a major criteria for me, but I'd still take more power with a steeper learning curve and be happy. Free (as in beer) would be nice, but I'd be willing to pay if the tool's worth it. What should I be using? ...
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How do I find Waldo with Mathematica?

... over the weekend: What is a good way to solve those Where's Waldo? [ 'Wally' outside of North America] puzzles, using Mathematica (image-processing and other functionality)? ...
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How do you make sure email you send programmatically is not automatically marked as spam?

...these accounts exist, read what's sent to them, and act on complaints. Finally, make it really easy to unsubscribe. Otherwise, your users will unsubscribe by pressing the spam button, and that will affect your reputation. That said, getting Hotmail to accept your emails remains a black art. ...
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Switch statement for greater-than/less-than

...for Windows was 10ms instead of 1ms. if-immediate This is the fastest in all tested environments, except in ... drumroll MSIE! (surprise, surprise). This is the recommended way to implement it. if (val < 1000) { /*do something */ } else if (val < 2000) { /*do something */ } else ... if (val...
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Why do we need break after case statements?

Why doesn't the compiler automatically put break statements after each code block in the switch? Is it for historical reasons? When would you want multiple code blocks to execute? ...