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Warn user before leaving web page with unsaved changes
I have some pages with forms in my application.
18 Answers
18
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How can I prevent SQL injection in PHP?
If user input is inserted without modification into an SQL query, then the application becomes vulnerable to SQL injection , like in the following example:
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Remove last character from C++ string
... string is called "myString" which gives to the confusion, in the question it is "st". Your code should be: st = st.substr(0, st.size()-1). But it still doesn't look the right way, I think that the proper way is to use the function that is intended for this task, it's called erase() and the code is:...
How to automatically install Emacs packages by specifying a list of package names?
...ackages you want
(setq package-list '(package1 package2))
; list the repositories containing them
(setq package-archives '(("elpa" . "http://tromey.com/elpa/")
("gnu" . "http://elpa.gnu.org/packages/")
("marmalade" . "http://marmalade-repo.org/packa...
How can I produce an effect similar to the iOS 7 blur view?
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Why bother replicating the effect? Just draw a UIToolbar behind your view.
myView.backgroundColor = [UIColor clearColor];
UIToolbar* bgToolbar = [[UIToolbar alloc] initWithFrame:myView.frame];
bgToolbar.barStyle = UIBarStyleDefault;
[myView.superview insertSubview:bgToolb...
What is a practical use for a closure in JavaScript?
...tion();
}
}
})();
As you can see there, a is now an object, with a method publicfunction ( a.publicfunction() ) which calls privatefunction, which only exists inside the closure. You can NOT call privatefunction directly (i.e. a.privatefunction() ), just publicfunction().
Its a minim...
javac option to compile all java files under a given directory recursively
...build tool (Ant or Maven, Ant is already suggested and is easier to start with) or an IDE that handles the compilation (Eclipse uses incremental compilation with reconciling strategy, and you don't even have to care to press any "Compile" buttons).
Using Javac
If you need to try something out for a ...
Image library for Python 3
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The "friendly PIL fork" Pillow works on Python 2 and 3. Check out the Github project for support matrix and so on.
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In MySQL, can I copy one row to insert into the same table?
..., I want to duplicate an existing row in the table) but I want to do this without having to list all the columns after the "select", because this table has too many columns.
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Why does “pip install” inside Python raise a SyntaxError?
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pip is run from the command line, not the Python interpreter. It is a program that installs modules, so you can use them from Python. Once you have installed the module, then you can open the Python shell and do import selenium.
The Python shell is not a command line, it is an interact...