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Entity framework code-first null foreign key
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Also -- this doesn't seem to work for Guid based keys. (It makes them nullable, sure, but saving a record to the database with the foreign key set to null fails due to an automatically generated foreign key constraint.) :-(
– BrainSlugs83
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Getting an empty JQuery object
...a change handler on a select box to show and hide some follow up questions based on the value of the selection.
4 Answers
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Setting environment variables for accessing in PHP when using Apache
...Linux environment and I have a PHP Web Application that conditionally runs based on environment variables using getenv in PHP. I need to know how these environment variables need to be set for the application to work correctly. I am not sure how to set this up on Apache.
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How to generate random SHA1 hash to use as ID in node.js?
... do this by generating 1 million random numbers and incrementing a counter based on the .length of each number.
// get distribution
var counts = [], rand, len;
for (var i=0; i<1000000; i++) {
rand = Math.random();
len = String(rand).length;
if (counts[len] === undefined) counts[len] = 0;
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How to calculate moving average using NumPy?
...ou can easily implement it with np.cumsum, which may be is faster than FFT based methods:
EDIT Corrected an off-by-one wrong indexing spotted by Bean in the code. EDIT
def moving_average(a, n=3) :
ret = np.cumsum(a, dtype=float)
ret[n:] = ret[n:] - ret[:-n]
return ret[n - 1:] / n
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What's the best way to distribute Java applications? [closed]
...t cases you want to isolate them from the fact that you are running a Java-based app. Give them with a native installer that does the right thing (create start menu entries, launchers, register with add/remove programs, etc.) and already bundles a Java runtime (so the user does not need to know or c...
How do I find the next commit in git? (child/children of ref)
...be $child
done
done
done
As illustrated by this thread, in a VCS based on history represented by a DAG (Directed Acyclic Graph), there is not "one parent" or "one child".
C1 -> C2 -> C3
/ \
A -> B E -> F
\ /
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How to output loop.counter in python jinja template?
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Worth mentioning that if you want a 0-based index, you can use loop.index0 instead.
– ereOn
Nov 5 '13 at 8:40
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UUID max character length
... you want to accept them, and 2) what the max length of those IDs might be based on whatever API is used to generate them.
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Get the subdomain from a URL
...first blush, and it depends on how each TLD is managed. You'll need a database of all the TLDs that include their particular partitioning, and what counts as a second level domain and a subdomain. There aren't too many TLDs, though, so the list is reasonably manageable, but collecting all that inf...