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find vs find_by vs where
...is used as a helper when you're searching for information within a column, and it maps to such with naming conventions. For instance, if you have a column named name in your database, you'd use the following syntax:
Model.find_by(name: "Bob")
.where is more of a catch all that lets you use a bit...
Cannot install node modules that require compilation on Windows 7 x64/VS2012
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To do it without VS2010 installation, and only 2012, set the msvs_version flag:
node-gyp rebuild --msvs_version=2012
npm install <module> --msvs_version=2012
as per @Jacob comment
npm install --msvs_version=2013 if you have the 2013 version
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How is set() implemented?
...ython source code for set which, according to Achim Domma, is mostly a cut-and-paste from the dict implementation.
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Is there any way to kill a Thread?
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It is generally a bad pattern to kill a thread abruptly, in Python and in any language. Think of the following cases:
the thread is holding a critical resource that must be closed properly
the thread has created several other threads that must be killed as well.
The nice way of handling ...
How can I determine the URL that a local Git repository was originally cloned from?
...ew days ago. I've since discovered that there are several forks on GitHub, and I neglected to note which one I took originally. How can I determine which of those forks I pulled?
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Bin size in Matplotlib (Histogram)
...specified by list of N+1 values where the first N give the lower bin edges and the +1 gives the upper edge of the last bin.
Code:
from numpy import np; from pylab import *
bin_size = 0.1; min_edge = 0; max_edge = 2.5
N = (max_edge-min_edge)/bin_size; Nplus1 = N + 1
bin_list = np.linspace(min_edge...
Difference between `data` and `newtype` in Haskell
...resentation at runtime, as the type that you wrap.
While data declares a brand new data structure at runtime.
So the key point here is that the construct for the newtype is guaranteed to be erased at compile time.
Examples:
data Book = Book Int Int
newtype Book = Book (Int, Int)
Note ...
Return index of greatest value in an array
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This is probably the best way, since it’s reliable and works on old browsers:
function indexOfMax(arr) {
if (arr.length === 0) {
return -1;
}
var max = arr[0];
var maxIndex = 0;
for (var i = 1; i < arr.length; i++) {
if (arr[i] > m...
Force Intellij IDEA to reread all maven dependencies
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Press Ctrl+Shift+A to find actions, and input "reimport", you will find the "Reimport All Maven Projects".
On a Mac, use ⌘+⇧+A instead.
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CSS table column autowidth
... width: 1px;
white-space: nowrap;
}
Flexible, Class-Based Solution
And a more flexible solution is creating a .fitwidth class and applying that to any columns you want to ensure their contents are fit on one line:
td.fitwidth {
width: 1px;
white-space: nowrap;
}
And then in your ...