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A fast method to round a double to a 32-bit int explained
...s for numbers with absolute value < 2 ^ 51.
This is a little program to test it: ideone.com
#include <cstdio>
int main()
{
// round to nearest integer
printf("%.1f, %.1f\n", rint(-12345678.3), rint(-12345678.9));
// test tie-breaking rule
printf("%.1f, %.1f, %.1f, %.1f\n",...
String literals and escape characters in postgresql
...cated the text needed to be preceded with 'E', as such:
insert into EscapeTest (text) values (E'This is the first part \n And this is the second');
This suppressed the warning, but the text was still not being returned correctly. When I added the additional slash as Michael suggested, it worked.
...
What is the list of valid @SuppressWarnings warning names in Java?
... a nonexistent path in environment paths (such as classpath).
The latest available javac (1.6.0_13) for mac have the following supported warnings
all
cast
deprecation
divzero
empty
unchecked
fallthrough
path
serial
finally
overrides
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How to compare if two structs, slices or maps are equal?
...
Yes exactly! When writing tests, it's very important to use go-cmp and not reflect.
– Kevin Minehart
Sep 19 '17 at 1:01
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How would you implement an LRU cache in Java?
...t more ingrained in my head.
So here is the simplest version with a unit test that shows it works based on some other versions.
First the non-concurrent version:
import java.util.LinkedHashMap;
import java.util.Map;
public class LruSimpleCache<K, V> implements LruCache <K, V>{
...
Tainted canvases may not be exported
...s because your most sensitive info is likely on your local drive!).
While testing try these workarounds:
Put all page related files (.html, .jpg, .js, .css, etc) on your desktop (not in sub-folders).
Post your images to a site that supports cross-domain sharing (like dropbox.com). Be sure you pu...
Is it safe to parse a /proc/ file?
... not fit in the intermediate, kernel-space buffer during a single read.
I tested that with a program using a 64K read buffer but it results in a kernel space buffer of 3072 bytes in my system for proc_read to return data. Multiple calls with advancing pointers are needed to get more than that much...
Idiomatic way to convert an InputStream to a String in Scala
...lease point out the "performance bug" that you mentioned in your answer. I tested both versions with some basic testcases and didn't hit any issue.
– Sahil Sareen
Sep 15 '15 at 16:11
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How to run SQL script in MySQL?
...ve to declare the SQL file as source.
mysql> source \home\user\Desktop\test.sql;
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How do I remove all non alphanumeric characters from a string except dash?
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in my testing, this technique was much faster. to be precise, it was just under 3 times faster than the Regex Replace technique.
– Dan
Aug 11 '11 at 15:49
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