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How should equals and hashcode be implemented when using JPA and Hibernate
How should model class's equals and hashcode be implemented in Hibernate? What are the common pitfalls? Is the default implementation good enough for most cases? Is there any sense to use business keys?
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How to create an array from a CSV file using PHP and the fgetcsv function
...here in case fopen() fails, but this works to read a CSV file line by line and parse the line into an array.
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Convert file path to a file URI?
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The System.Uri constructor has the ability to parse full file paths and turn them into URI style paths. So you can just do the following:
var uri = new System.Uri("c:\\foo");
var converted = uri.AbsoluteUri;
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Objective-C and Swift URL encoding
...cape the characters you want is a little more work.
Example code
iOS7 and above:
NSString *unescaped = @"http://www";
NSString *escapedString = [unescaped stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];
NSLog(@"escapedString: %@", escapedString...
Ruby class types and case statements
... the problem. This should probably be pointed out more often in tutorials and such (but I bet that many tutorial writers aren't aware of this either).
– Daisy Sophia Hollman
Oct 13 '10 at 13:28
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Trim spaces from end of a NSString
... answered Apr 22 '11 at 14:15
DanDan
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Salting Your Password: Best Practices?
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Prefix or suffix is irrelevant, it's only about adding some entropy and length to the password.
You should consider those three things:
The salt has to be different for every password you store. (This is quite a common misunderstanding.)
Use a cryptographically secure random number generat...
What LaTeX Editor do you suggest for Linux? [closed]
...X (texmakerx.sourceforge.net) which is mainly TeXMaker with spell checking and some other features.
– ubuntudroid
Jan 8 '11 at 13:39
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Where can I find documentation on formatting a date in JavaScript?
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I love 10 ways to format time and date using JavaScript and Working with Dates.
Basically, you have three methods and you have to combine the strings for yourself:
getDate() // Returns the date
getMonth() // Returns the month
getFullYear() // Returns th...
Persistent invalid graphics state error when using ggplot2
I believe my dataframe is okay and my code is okay. In fact, I have eliminated parts of the dataframe and most of the graphing code to make things as basic as possible. But still, I get:
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