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java.util.Date vs java.sql.Date
...ate component as one long and time component as another, for example right now would be 20100221 and 154536123. These magic numbers can be used in SQL queries and will be portable from database to another and will let you avoid this part of JDBC/Java Date API:s entirely.
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What's the difference between using INDEX vs KEY in MySQL?
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There's no difference. They are synonyms.
From the CREATE TABLE manual entry:
KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can
also be specified as just KEY when given in a column definition. This was
imple...
Python list iterator behavior and next(iterator)
...tions, each iteration resulting in 2 lines being written to the terminal.
If you assign the output of next() things work as expected:
>>> a = iter(list(range(10)))
>>> for i in a:
... print(i)
... _ = next(a)
...
0
2
4
6
8
or print extra information to differentiate the ...
Moving Files into a Real Folder in Xcode
...o them to match what you did in step 1.
All the references in Xcode should now be red (that's OK!).
From the Identity and Type manager, select the Group in Xcode that you want to relocate, then click the folder icon from the info pane:
In the Finder selection dialog, locate the equivalent new fol...
Why is char[] preferred over String for passwords?
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Strings are immutable. That means once you've created the String, if another process can dump memory, there's no way (aside from reflection) you can get rid of the data before garbage collection kicks in.
With an array, you can explicitly wipe the data after you're done with it. You can ov...
How to disallow temporaries
...see Johannes Schaub's Comment and ensuing discussion below: "How can you know that it is source compatible with existing code? His friend includes his header and has void f() { int Foo = 0; } which previously compiled fine and now miscompiles! Also, every line that defines a member function of clas...
How to add minutes to my Date
...lang3.time package
int addMinuteTime = 5;
Date targetTime = new Date(); //now
targetTime = DateUtils.addMinutes(targetTime, addMinuteTime); //add minute
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What is the purpose of a stack? Why do we need it?
So I am learning MSIL right now to learn to debug my C# .NET applications.
7 Answers
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How to use Namespaces in Swift?
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The link to the Apple dev forums is now broken, and Apple has not imported that thread into the new forums.developer.apple.com forums site, unfortunately.
– Dai
Feb 15 '17 at 2:07
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USB Debugging option greyed out
...our phone to your PC, using the USB cable, select the mode as PC Software.
Now you should be able to enable USB Debugging.
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