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Coding Practices which enable the compiler/optimizer to make a faster program

... best. First write a program which is correct and maintainable. Next, profile your code. Then, and only then, you might want to start investigating the effects of telling the compiler how to use memory. Make 1 change at a time and measure its impact. Expect to be disappointed and to have to wor...
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Received fatal alert: handshake_failure through SSLHandshakeException

...he JVM for certificate validation. In most cases, this will be the cacerts file in the JRE_HOME/lib/security directory. If the location of the trust store has been specified using the JVM system property javax.net.ssl.trustStore, then the store in that path is usually the one used by the client libr...
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Evaluating a mathematical expression in a string

...__ = '$Date: 2009-03-20 $' __source__ = '''http://pyparsing.wikispaces.com/file/view/fourFn.py http://pyparsing.wikispaces.com/message/view/home/15549426 ''' __note__ = ''' All I've done is rewrap Paul McGuire's fourFn.py as a class, so I can use it more easily in other places. ''' class NumericSt...
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Page redirect after certain time PHP

...re any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include, or require, functions, or another file access function, and have spaces or empty lines that are output before header() is called. The same problem exists...
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How to add a local repo and treat it as a remote repo

... It's important to put file:// on the front of the path and to use the full path to the local repository so that client software can access it through the expected protocol. And in answer to Erik's question above, the .git on the end of the path is...
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Android java.lang.VerifyError?

... Android uses a different class file format. Are you running the 3rd party JAR files through the "dx" tool that ships with the Android SDK? share | improv...
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How to apply CSS to iframe?

...e embed code had no restriction on direct access, so by using PHP function file_get_contents it is possible to get the entire content from the page. Instead of calling the Google URL, it is possible to call a php file located on your server, ex. google.php, which will contain the original content w...
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javax.validation.ValidationException: HV000183: Unable to load 'javax.el.ExpressionFactory'

...ment, however, you have to add an implementation as dependency to your POM file. For instance you can add the following two dependencies to use the JSR 341 reference implementation: <dependency> <groupId>javax.el</groupId> <artifactId>javax.el-api</artifactId> ...
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How to delete all rows from all tables in a SQL Server database?

... Got it - if a backup file already exists then it looks like SSMS appends to it rather than replacing it (I didn't realize this). So I deleted the file and now the 'empty' database backup file is only 3.7 MB – Ben ...
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rails - Devise - Handling - devise_error_messages

...\gems\1.9.1\gems\devise-version\app\controllers|helpers|mailers..." to the file you want in your project. [Edit] Or you can make your file inherit from the "normal" devise files... Like... say... You want to overwrite only one function within the devise/registrations_controller.rb, the first line o...