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What's the difference between a catalog and a schema in a relational database?
...ews and domains of the
Information Schema.
Database Language SQL, (Proposed revised text of DIS 9075), p 45
From the SQL point of view :
A catalog is often synonymous with database. In most SQL dbms, if you query the information_schema views, you'll find that values in the "table_catalog" c...
How do I make a Git commit in the past?
...own personal use and I found some old versions of a file already in the repository. How do I commit it to the history in the correct order according the file's "date modified" so I have an accurate history of the file?
...
LINQPad [extension] methods [closed]
...mically build simple expression:
new Hyperlinq (QueryLanguage.Expression, "123 * 234").Dump();
// Dynamically build query:
new Hyperlinq (QueryLanguage.Expression, @"from c in Customers
where c.Name.Length > 3
select c.Name", "Click to run!").Dump();
You can also write your own extension metho...
What is the difference between the states selected, checked and activated in Android?
I'd like to know what differs those states. I didn't find any webpage clarifying this.
3 Answers
...
Stack smashing detected
...-protector while compiling. In that case you will get a different error, most likely a segmentation fault as you are trying to access an illegal memory location. Note that -fstack-protector should always be turned on for release builds as it is a security feature.
You can get some information abo...
Override Java System.currentTimeMillis for testing time sensitive code
....currentTimeMillis , other than manually changing the system clock on the host machine?
11 Answers
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How do emulators work and how are they written? [closed]
...instruction, you compile this list of operations to machine code for your host platform, then you cache this compiled code and execute it. Then when you hit a given instruction group again, you only have to execute the code from the cache. (BTW, most people don't actually make a list of instructio...
Java 8 Streams: multiple filters vs. complex condition
...
@Juan Carlos Diaz: no, streams don’t work that way. Read about “lazy evaluation”; intermediate operations don’t do anything, they only alter the outcome of the terminal operation.
– Holger
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Integrating the ZXing library directly into my Android application
...deEncoder(qrData, null,
Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(), qrCodeDimention);
try {
Bitmap bitmap = qrCodeEncoder.encodeAsBitmap();
imageView.setImageBitmap(bitmap);
} catch (WriterException e) {
e.printStackTrace();
}
Here is Contents.java
//
// * Copyright...
Why is C so fast, and why aren't other languages as fast or faster? [closed]
...real programmers" write in C, and that C is so much faster because it's "close to the machine." Leaving the former assertion for another post, what is special about C that allows it to be faster than other languages? Or put another way: what's to stop other languages from being able to compile down ...