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JavaScript - cannot set property of undefined
...ever set d[a] to any value.
Because of this, d[a] evaluates to undefined, and you can't set properties on undefined.
If you add d[a] = {} right after d = {} things should work as expected.
Alternatively, you could use an object initializer:
d[a] = {
greetings: b,
data: c
};
Or you coul...
Where does Xcode 4 store Scheme Data?
I'm just starting to use Xcode 4, and I'm trying to find the file in a project where it stores all of a project's Schemes. I figured they would be stored in a file in the xcodeproj directory somewhere, but for the life of me I can't find which one.
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C: What is the difference between ++i and i++?
In C, what is the difference between using ++i and i++ , and which should be used in the incrementation block of a for loop?
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Superiority of unnamed namespace over static?
...
You're basically referring to the section §7.3.1.1/2 from the C++03 Standard,
The use of the static keyword is
deprecated when declaring objects in a
namespace scope; the
unnamed-namespace provides a superior
alternative.
Note that this paragraph was already removed in C++11. stat...
How to bind function arguments without binding this?
...(arg1, arg2)
{
return function() { ... do your stuff with arg1 and arg2 ... };
}(actualArg1Value, actualArg2Value);
Hope I got the syntax right there. What it does is create a function called withWrappedArguments() (to be pedantic it is an anonymous function assigned to the variab...
MySQL remove all whitespaces from the entire column
.../doc/refman/5.0/en/string-functions.html#function_replace
To remove first and last space(s) of column :
UPDATE `table` SET `col_name` = TRIM(`col_name`)
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_trim
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Insert string at specified position
...e) there should be a short explanation in your post maybe. I'll do it now and copy'n'paste from php.net: "Of course, if length is zero then this function will have the effect of inserting replacement into string at the given start offset."
– Wolfsblvt
Jan 23 '...
Automatic Preferred Max Layout Width is not available on iOS versions prior to 8.0
I opened an existing iOS project with Xcode6 beta6, and Xcode lists the following warning for both Storyboard and Xib files:
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Python/postgres/psycopg2: getting ID of row just inserted
I'm using Python and psycopg2 to interface to postgres.
3 Answers
3
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new DateTime() vs default(DateTime)
...s must be compile-time constants, which MinValue is not. default(DateTime) and new DateTime() are both valid though.(which is actually funny, because const DateTime x = default(DateTime) is not valid, since DateTime values cannot be declared as compile-time constants)
– Jerri K...