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size_t vs. uintptr_t
...inters to be representable as integers altogether: Any pointer type may be converted to an integer type. Except as previously specified, the result is implementation-defined. If the result cannot be represented in the integer type, the behavior is undefined. The result need not be in the range of va...
Running PostgreSQL in memory only
...atement = ds.getConnection().createStatement();
statement.execute("SELECT 1");
ResultSet resultSet = statement.getResultSet();
resultSet.next();
int resultSetInt = resultSet.getInt(1);
assertEquals("A basic SELECT query succeeds", 1, resultSetInt);
}
}
...
Rails: Default sort order for a rails model?
...hen it gets used for actions like where's limiting (filtering) the default selection (a bad idea for a default) rather than just being used for ordering results.
For where selections, just use the regular named scopes. and add that scope on in the query, e.g. Book.all.published where published is a ...
What unique features does Firebug have that are not built-in to Firefox?
...ng:
Firebug 2 doesn’t work in multi-process browsers (i.e. e10s) and converting it is too complex, it will stop working when e10s is activated in Firefox.
We want to be ready when Firebug 2 stops working and we have come up with the following plan.
Integrate all Firebug 3 features in...
Can someone give an example of cosine similarity, in a very simple, graphical way?
... are 8-dimensional. A virtue of using cosine similarity is clearly
that it converts a question that is beyond human ability to visualise to one
that can be. In this case you can think of this as the angle of about 35
degrees which is some 'distance' from zero or perfect agreement.
...
Why do we need argc while there is always a null at the end of argv?
...cts), you can just omit the parameter name, like this C++ snippet (easy to convert to C):
#include <stdio.h> // C-compatible include, guarantees puts in global namespace
// program will print contents of argv, one item per line, starting from argv[0]
int main(int /*argc*/, char *argv[]) { /...
JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
...ng window.loadImage()
b - read exif tags using window.EXIF.getData()
c - convert the image to canvas and fix the image orientation using window.loadImage.scale()
d - place the canvas into the document
here you go :)
window.loadImage("/your-image.jpg", function (img) {
if (img.type === "erro...
What is the definition of “interface” in object oriented programming
...or. However, Java 8 introduced lambda expressions so the C# example can be converted to Java very easily (Func<int> becomes java.util.function.IntSupplier and => becomes ->).
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Saving images in Python at a very high quality
... require images in 1200 / 600 / 300 dpi depending on what the image is of. Convert to desired dpi and format in GiMP or Inkscape.
EDIT: Obviously the dpi doesn't matter since .svg are vector graphics and have "infinite resolution".
...
Javascript equivalent of Python's zip function
...utput.
As parseInt's second argument is the base/number radix, to which to convert the number to, and since map passes the index as the second argument to its argument-function, a wrapper function is used.
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