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How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?
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@dev_feed In terms of database design I don't see the link back to be beneficial, but using the example above the link back could simplify finding a student given an address.
– edhedges
Sep 6 '14 at 23:23
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String.IsNullOrWhiteSpace in LINQ Expression
...pe))
);
return exp;
}
return base.VisitMethodCall(node);
}
}
public static class EfQueryableExtensions
{
public static IQueryable<T> WhereEx<T>(this IQueryable<T> queryable, Expression<Func<T, bool>> where)
{
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Detecting 'stealth' web-crawlers
...l rules to block offenders. It included whitelists of IP addresses/ranges based on http://www.iplists.com/, which were then updated automatically as needed by checking claimed user-agent strings and, if the client claimed to be a legitimate spider but not on the whitelist, it performed DNS/reverse-...
How to generate and validate a software license key?
...cause they don't have the private key. A license key would look like this: BASE32(CONCAT(DATA, PRIVATE_KEY_ENCRYPTED(HASH(DATA))))
The biggest challenge here is that the classical public key algorithms have large signature sizes. RSA512 has an 1024-bit signature. You don't want your license keys to ...
Why are my basic Heroku apps taking two seconds to load?
...cations. Your app is allotted blocks of computing power. Heroku partitions based on resource demand. When you have a popular application that demands more power, you can pay for more 'dynos' (application containers) and then get a larger chunk of the pie in return.
In your case though, you are run...
is node.js' console.log asynchronous?
...example below demonstrate, console.log async and console.error is sync)
Based on Node.js Doc's
The console functions are synchronous when the destination is a terminal or a file (to avoid lost messages in case of premature exit) and asynchronous when it's a pipe (to avoid blocking for long ...
subtle differences between JavaScript and Lua [closed]
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I think you can add 1-based arrays to the list, it can be pretty annoying when you are not used to it.
– Yann
Aug 5 '14 at 13:03
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Return from lambda forEach() in java
...ly use exception driven development when you can avoid littering your code base with multiples try-catch and throwing these exceptions are for very special cases that you expect them and can be handled properly.)
share
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How do I make a fully statically linked .exe with Visual Studio Express 2005?
...er recently I made the disturbing discovery that the pleasing results were based on more luck that I would like. Attempting to run one of these programs on an old (2001 vintage, not scrupulously updated) XP box gave me nothing but a nasty "System cannot run x.exe" (or similar) message.
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Replace a value if null or undefined in JavaScript
..., is an object, and not an array, so you cannot simply retrieve a property based on an index, since there is no specific order of their properties. The only way to retrieve their values is by using the specific name:
var someVar = options.filters.firstName; //Returns 'abc'
Or by iterating over th...