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Node.js: Difference between req.query[] and req.params
...req.query contains the URL query parameters (after the ? in the URL).
You can also use req.param(name) to look up a parameter in both places (as well as req.body), but this method is now deprecated.
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How to wrap text around an image using HTML/CSS
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With CSS Shapes you can go one step further than just float text around a rectangular image.
You can actually wrap text such that it takes the shape of the edge of the image or polygon that you are wrapping it around.
DEMO FIDDLE (Currently wo...
jQuery - checkbox enable/disable
...he other 3 checkboxes should be enabled, else they should be disabled. How can I do this using jQuery?
6 Answers
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Default initialization of std::array?
...That's not default-initialization, it is value-initialization (8.5/7). You can request value initialization quite easily in C++11 by giving each declaration an empty initializer:
int plain_int{};
int c_style_array[13]{};
std::array<int, 13> cxx_style_array{};
Which will value-initialize all...
What's the difference between interface and @interface in java?
... Great thanks, good to know. So what was the rationale for calling it @interface, rather then say @annotation I wonder.. seems like an unnecessarily overloaded term.
– Bittercoder
May 27 '09 at 23:46
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Maintain git repo inside another git repo
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This is pretty much the use case for submodules. REPO-A and REPO-B are treated as git repos in their own right, with their own commits, origins, history, etc.
– Damien Wilson
Jan 11 '11 at 16:10
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How To Check If A Key in **kwargs Exists?
...seems **kwargs play by different rules... so why doesn't this work and how can I check to see if a key in **kwargs exists?
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In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...nil;
Will be transformed to:
NSError * __strong error = nil;
When you call your save method:
- ( BOOL )save: ( NSError * __autoreleasing * );
The compiler will then have to create a temporary variable, set at __autoreleasing. So:
NSError * error = nil;
[ database save: &error ];
Will ...
getResourceAsStream() vs FileInputStream
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The java.io.File and consorts acts on the local disk file system. The root cause of your problem is that relative paths in java.io are dependent on the current working directory. I.e. the directory from which the JVM (in your case: the webserver's one) is started. This...
promise already under evaluation: recursive default argument reference or earlier problems?
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Formal arguments of the form x=x cause this. Eliminating the two instances where they occur we get:
f <- function(x, T) {
10 * sin(0.3 * x) * sin(1.3 * x^2) + 0.001 * x^3 + 0.2 * x + 80
}
g <- function(x, T, f. = f) { ## 1. note f.
exp(-f.(x...