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MySQL Creating tables with Foreign Keys giving errno: 150
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For others that find this SO entry via Google: Be sure that you aren't trying to do a SET NULL action on a foreign key (to be) column defined as "NOT NULL." That caused great frustration until I remembered to do a CHECK ENGINE INNODB STATUS.
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What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
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Copy-pasting an answer from google that doesn't even answer the question should not get so many upvotes
– ineedahero
Apr 25 '17 at 16:51
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The case against checked exceptions
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B: Client programmers: get in the habit of creating a wrapped exception (google it) early on in your development. JDK 1.4 and later provide a constructor in RuntimeException for this, but you can easily create your own too. Here's the constructor:
public RuntimeException(Throwable cause)
Then g...
Error: Tablespace for table xxx exists. Please DISCARD the tablespace before IMPORT
... am getting a pretty interesting error on which I cannot find any help via google and the stackoverflow search.
24 Answers
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What is the “right” way to iterate through an array in Ruby?
...t know what the default order is for PHP associative arrays (apparently my google fu isn't strong enough to figure that out, either), but I don't know how you can consider regular PHP arrays and PHP associative arrays to be "the same" in this context, since the order for associative arrays seems und...
Landscape printing from HTML
...e way and it would depend on your content and environment.
This maybe why Google Documents creates a PDF when print is selected and then allows the user to open and print that.
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Difference between case object and object
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A huge necro, but it is the highest result for this question in Google outside official tutorial which, as always, is pretty vague about the details. Here are some bare bones objects:
object StandardObject
object SerializableObject extends Serializable
case object CaseObject
Now, lets ...
What is the difference between const_iterator and non-const iterator in the C++ STL?
... mutable exists for a very good reason. It is rarely used, and looking at Google Code Search, there appears to be fair percentage of valid uses. The keyword is a very powerful optimization tool, and it's not like removing it would improve const-correctness(coughpointerscoughandcoughreferencescough)...
How to navigate through textfields (Next / Done Buttons)
...hierarchy, up to the window and its controller, and then the app delegate. Google "responder chain" for plenty of info.
– davehayden
Jan 10 '12 at 22:35
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What's the difference between passing by reference vs. passing by value?
... not the definition given in almost every introductory programming course. Google what is pass by reference and you will not get that answer. The authentic definition you provide is misuse of the word reference, as when you follow that definition you’re using an alias not a reference: you have two...