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What is the difference between the HashMap and Map objects in Java?
...ase, the interface is HashMap<String, Object>, whereas in the second it's Map<String, Object>. But the underlying object is the same.
The advantage to using Map<String, Object> is that you can change the underlying object to be a different kind of map without breaking your contrac...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
I realize that parameterized SQL queries is the optimal way to sanitize user input when building queries that contain user input, but I'm wondering what is wrong with taking user input and escaping any single quotes and surrounding the whole string with single quotes. Here's the code:
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C++ equivalent of StringBuffer/StringBuilder?
...plate Library class that provides efficient string concatenation functionality, similar to C#'s StringBuilder or Java's StringBuffer ?
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Colorized grep — viewing the entire file with highlighted matches
...r=always flag to be tremendously useful. However, grep only prints lines with matches (unless you ask for context lines). Given that each line it prints has a match, the highlighting doesn't add as much capability as it could.
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Regex to replace multiple spaces with a single space
...Given that you also want to cover tabs, newlines, etc, just replace \s\s+ with ' ':
string = string.replace(/\s\s+/g, ' ');
If you really want to cover only spaces (and thus not tabs, newlines, etc), do so:
string = string.replace(/ +/g, ' ');
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Serving gzipped CSS and JavaScript from Amazon CloudFront via S3
I've been looking for ways of making my site load faster and one way that I'd like to explore is making greater use of Cloudfront.
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Proper way to wait for one function to finish before continuing?
I have two JS functions. One calls the other. Within the calling function, I'd like to call the other, wait for that function to finish, then continue on. So, for example/pseudo code:
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In Bash, how can I check if a string begins with some value?
I would like to check if a string begins with "node" e.g. "node001". Something like
13 Answers
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no
I have many users on my web site (20000-60000 per day), which is a download site for mobile files. I have remote access to my server (windows server 2008-R2). I've received "Server is unavailable" errors before, but am now seeing a connection timeout error.
I'm not familiar with this - wh...
Explanation of …
...cript> , which contained code that looks like something out of PHP but with JavaScript tags.
7 Answers
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