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How to convert Linux cron jobs to “the Amazon way”?
...ds and no other cron worker will execute
the job. The lock will automatically be released after the TTL has
expired. This is conceptually very similar to the SQS option we
discussed yesterday.
Also see; Google's chubby
http://static.googleusercontent.com/external_content/untrusted_dlcp...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
...
tl;dr: This is all because of security reasons.
OAuth 2.0 wanted to meet these two criteria:
You want to allow developers to use non-HTTPS redirect URI because not all developers have an SSL enabled server and if they do it's not always ...
How does grep run so fast?
I am really amazed by the functionality of GREP in shell, earlier I used to use substring method in java but now I use GREP for it and it executes in a matter of seconds, it is blazingly faster than java code that I used to write.(according to my experience I might be wrong though)
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How to get the mysql table columns data type?
...n't forget: AND INDEX_SCHEMA = 'database_name'
– Inshallah
Aug 6 '09 at 18:16
I personally tried this and would agree ...
Getting and removing the first character of a string
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x <- 'hello stackoverflow'
substring(x, 2, nchar(x))
Idea is select all characters starting from 2 to number of characters in x. This is important when you have unequal number of characters in word or phrase.
Selecting the first letter is trivial as previous answers:
substring(x,1,1)
...
Way to get number of digits in an int?
...K, there is nothing "un-neat" about it. You have to realize that mathematically, numbers don't have a length, nor do they have digits. Length and digits are both properties of a physical representation of a number in a specific base, i.e. a String.
A logarithm-based solution does (some of) the same...
Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
...s that a RuntimeException was encountered in a Daemon thread. This is typically uncaught at runtime, unless the original developer caught and handled the exception.
Typically, the debugger in Eclipse is configured to suspend execution at the location where the exception was thrown, on all uncaught ...
UITextField auto-capitalization type - iPhone App
...tfield.autocapitalizationType = .words
There are a few options here:
allCharacters is the same as double tapping the shift key, basically capslock.
none is pretty self-explanatory, keyboard will never try to capitalize letters.
sentences will try to capitalize the next word after an end mark p...
Static fields on a null reference in Java
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@JonofAllTrades I think this is obvious: it is reasonable to not throw any exceptions when calling on a null reference because it doesn't matter since the method is static.
– Malcolm
Jul 20 '1...
Get environment variable value in Dockerfile
... Very nice solution! On a Mac you can get envsubst as part of brew install gettext. But because of possible conflicts with the BSD build system it is "keg-only" and no symlnks are made. However, it is safe to do ln -s /usr/local/Cellar/gettext/*/bin/envsubst /usr/local/bin/ to add that one comma...