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DateTime vs DateTimeOffset
...rently, we have a standard way of dealing with .NET DateTime 's in a TimeZone aware way: Whenever we produce a DateTime we do it in UTC (e.g. using DateTime.UtcNow ), and whenever we display one, we convert back from UTC to the user's local time.
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Are Java static calls more or less expensive than non-static calls?
Is there any performance benefit one way or another? Is it compiler/VM specific? I am using Hotspot.
12 Answers
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How to Display Selected Item in Bootstrap Button Dropdown Title
I am using the bootstrap Dropdown component in my application like this:
14 Answers
14...
Hibernate: hbm2ddl.auto=update in production?
...t's not mission critical and with no highly paid DBAs on staff. It's just one less manual process that's subject to human error - the application can detect the difference and do the right thing, plus you've presumably tested it in various development and test environments.
One caveat - in a clus...
Putting git hooks into repository
...eive post-update pre-auto-gc"
# assuming the script is in a bin directory, one level into the repo
HOOK_DIR=$(git rev-parse --show-toplevel)/.git/hooks
for hook in $HOOK_NAMES; do
# If the hook already exists, is executable, and is not a symlink
if [ ! -h $HOOK_DIR/$hook -a -x $HOOK_DIR/$ho...
Prevent users from submitting a form by hitting Enter
...fix, and don't have time to implement validation items. I appreciate everyone's answers, but this is the one i'm going to go with in the mean time. thank you.
– DForck42
May 22 '09 at 13:42
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Clearing all cookies with JavaScript
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Nice one, but after experimenting, I found that a site can have only one cookie without =, and then it is a nameless cookie, you get its value actually. So if eqPos == 1, you should do name = "" instead, to erase the nameless valu...
Determine if 2 lists have the same elements, regardless of order? [duplicate]
... using sets.
Empirical Experiment
An empirical experiment concludes that one should prefer set, then sorted. Only opt for Counter if you need other things like counts or further usage as a multiset.
First setup:
import timeit
import random
from collections import Counter
data = [str(random.rand...
static const vs #define
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String constants specifically are one of those that might benefit from being #defined, at least if they can be used as "building blocks" for bigger string constants. See my reply for an example.
– AnT
Oct 28 '09 at 14:10...
ROW_NUMBER() in MySQL
...gle highest col3 for each (col1, col2) pair.
That's a groupwise maximum, one of the most commonly-asked SQL questions (since it seems like it should be easy, but actually it kind of isn't).
I often plump for a null-self-join:
SELECT t0.col3
FROM table AS t0
LEFT JOIN table AS t1 ON t0.col1=t1.co...