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Multiple “order by” in LINQ
...correct orderings if CategoryID is an int. For example, something with id=123, name=5times will appear after id=1234, name=something instead of before. It's also not inefficient to do string comparisons where int comparisons could occur.
– AaronLS
May 6 '13 a...
How to document a method with parameter(s)?
...
123
Since docstrings are free-form, it really depends on what you use to parse code to generate AP...
How do you remove a specific revision in the git history?
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123
Here is a way to remove non-interactively a specific <commit-id>, knowing only the <c...
Indent multiple lines quickly in vi
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123
A big selection would be:
gg=G
It is really fast, and everything gets indented ;-)
...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...lways point to MyArray any time that instruction executed, but it didn't. Fun.
– supercat
Apr 3 '13 at 16:51
then why...
Automatically create an Enum based on values in a database lookup table?
...way of defining integer constants (even if System.Enum has some additional functionality). Instead of writing const int Red=0, Green=1, Blue=3; You write enum { Red, Green, Blue }. A constant is by definition constant and not dynamic.
– Olivier Jacot-Descombes
...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... passing it to the filter.
Another benchmark with more columns:
set.seed(123)
x <- sample(1e5,1e5*26, replace = TRUE)
x[sample(seq_along(x), 1e3)] <- NA
df <- as.data.frame(matrix(x, ncol = 26))
library(microbenchmark)
microbenchmark(
na.omit = {df %>% na.omit},
filter.anonymous = ...
This Handler class should be static or leaks might occur: IncomingHandler
...lass implements MessageHandler {
private static final int DO_IT_MSG = 123;
private MainThreadHandler<MyClass> mHandler = new MainThreadHandler<>(this);
private void start() {
// Do it in 5 seconds.
mHandler.sendEmptyMessageDelayed(DO_IT_MSG, 5 * 1000);
...
What issues should be considered when overriding equals and hashCode in Java?
...flow when the implementation class doesn't override the equals method. not fun.
– Ran Biron
Dec 6 '10 at 19:16
2
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How can I measure the speed of code written in PHP? [closed]
...you want to benchmark a couple of instructions ; like compare two types of functions, for instance -- it's better if done thousands of times, to make sure any "perturbating element" is averaged.
Something like this, so, if you want to know how long it take to serialize an array :
$before = microti...