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How to encrypt/decrypt data in php?

...will be true if the key is crypto safe This can be done once or multiple times (if you wish to create a chain of encryption keys). Keep these as private as possible. IV The initialisation vector adds randomness to the encryption and required for CBC mode. These values should be ideally be used o...
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How to get the day of week and the month of the year?

...2-digit', hour12: false }; var prnDt = 'Printed on ' + new Date().toLocaleTimeString('en-us', options); console.log(prnDt); share | improve this answer | follow ...
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Best way to add page specific JavaScript in a Rails 3 app?

...derstand. Avoiding additional script tags is pretty important to page load time though. – Ziggy Apr 7 '13 at 20:27  |  show 1 more comment ...
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Windows 7 SDK installation failure

... I changed the value to 0. Once the SDK had installed (quite happily this time) I set the value back to 1. What alerted me to the possible error was the following in the SDK setup log: 12:19:42 PM Friday, 8 January 2010: SFX C:\Program Files\Microsoft SDKs\Windows\v7.0\Setup\SFX\dexplore.exe inst...
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Placeholder in IE9

...http://mathiasbynens.be/demo/placeholder p.s I have used this plugin many times and it works a treat. Also it doesn't submit the placeholder text as a value when you submit your form (... a real pain I found with other plugins). ...
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Case insensitive comparison of strings in shell script

...ash 4". Having said that, Bash 4 has been out for over seven years at the time of writing this comment, and my own OS X install has had it for almost that long. – Riot May 12 '16 at 0:24 ...
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Build the full path filename in Python

... filename = os.path.join(basedir, '.'.join((sys.argv[1], suffix))) time = read_var(ncf, 'time') lat = read_var(ncf, 'lat') lon = read_var(ncf, 'lon') soil = read_var(ncf, 'soilw') Simply run the script like: # on windows-based systems python script.py year ...
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To ARC or not to ARC? What are the pros and cons? [closed]

...s easier than your old code. It is not garbage collection. It has no GC runtime overhead. The compiler inserts retains and releases in all the places you should have anyway. But it's smarter than you and can optimize out the ones that aren't actually needed (just like it can unroll loops, eliminate ...
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Environment variables in Mac OS X

...l programs launched by the user, GUI and CLI. You can apply changes at any time by using the setenv command in launchctl. In theory, you should be able to put setenv commands in ~/.launchd.conf, and launchd would read them automatically when the user logs in, but in practice support for this file wa...
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TypeLoadException says 'no implementation', but it is implemented

... NOTE - If this answer doesn't help you, please take the time to scroll down through the other answers that people have added since. Short answer This can happen if you add a method to an interface in one assembly, and then to an implementing class in another assembly, but you r...