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MySQL selecting yesterday's date

How can I display and count the values whose dates are yesterday? I used time() to insert date in the database. Example: ...
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What is the single most influential book every programmer should read? [closed]

If you could go back in time and tell yourself to read a specific book at the beginning of your career as a developer, which book would it be? ...
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Objective-C: difference between id and void *

What is the difference between id and void * ? 7 Answers 7 ...
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What is the difference between JAX-RS and JAX-WS?

After reading a few articles about JAX-RS and JAX-WS, I had a few questions that I want to confirm? 5 Answers ...
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Best practices for overriding isEqual: and hash

...ive you do result = prime * result + var For objects you use 0 for nil and otherwise their hashcode. result = prime * result + [var hash]; For booleans you use two different values result = prime * result + ((var)?1231:1237); Explanation and Attribution This is not tcurdt's work, and ...
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Should each and every table have a primary key?

I'm creating a database table and I don't have a logical primary key assigned to it. So, I'm thinking about leaving it without a primary key, but I'm feeling a bit guilty about it. Should I? ...
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Does the APNS device token ever change, once created?

...st ensures that only APNs generates the token which it will later honor, and it can assure itself that a token handed to it by a device is the same token that it previously provisioned for that particular device—and only for that device. If the user restores backup data to a new device ...
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Why do this() and super() have to be the first statement in a constructor?

...ct those args inline as you are doing, or pass them in to your constructor and then pass them to super: public MySubClassB extends MyClass { public MySubClassB(Object[] myArray) { super(myArray); } } If the compiler did not enforce this you could do this: public M...
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Cross compile Go on OSX?

I am trying to cross-compile a go app on OSX to build binaries for windows and linux. I have read everything what I could find on the net. Closest example that I have found has been published on (apart from many unfinished discussions on go-nuts mailing list): ...
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The differences between .build, .create, and .create! and when should they be used?

So I've been seeing people using .build , .create , and .create! within their controllers more and more lately. What's the difference from just using .new and passing the param'd object and then .save ? Are there pros and cons? Does using these other methods offer benefits? ...