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What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
... indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the array.
So for example:
int[] array = new int[5];
int boom = array[10]; // Throws the exception
As for how to avoid it... um, don't do that. Be careful with y...
How can bcrypt have built-in salts?
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This is bcrypt:
Generate a random salt. A "cost" factor has been pre-configured. Collect a password.
Derive an encryption key from the password using the salt and cost factor. Use it to encrypt a well-known string. Store the ...
What causes a TCP/IP reset (RST) flag to be sent?
...ping every 10 minutes (exactly, within 1-2 seconds). I ran Wireshark and discovered that after 10 minutes of inactivity the other end is sending a packet with the reset (RST) flag set. A google search tells me "the RESET flag signifies that the receiver has become confused and so wants to abort the...
Is there a Max function in SQL Server that takes two values like Math.Max in .NET?
I want to write a query like this:
29 Answers
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How do I include a file over 2 directories back?
How do you include a file that is more than 2 directories back. I know you can use ../index.php to include a file that is 2 directories back, but how do you do it for 3 directories back?
Does this make sense?
I tried .../index.php but it isn't working.
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How can I add to List
I have a List which is declared like this :
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6
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capturing self strongly in this block is likely to lead to a retain cycle
How can I avoid this warning in xcode. Here is the code snippet:
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Prevent form submission on Enter key press
...boxes, one select drop down and one radio button . When the enter key is pressed, I want to call my JavaScript function, but when I press it, the form is submitted.
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Can you set a border opacity in CSS?
Is there a straight forward CSS way to make the border of an element semi-transparent with something like this?
9 Answers
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Why use iterators instead of array indices?
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The first form is efficient only if vector.size() is a fast operation. This is true for vectors, but not for lists, for example. Also, what are you planning to do within the body of the loop? If you plan on accessing the elements as in
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