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How do I dump an object's fields to the console?
...ayed, rather than rely on default output. A lot of classes don't implement it well, but it can be really useful when debugging. Ruby will fall back to to_s if it can't find an inspect` method.
– the Tin Man
Nov 27 '10 at 21:45
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What is the meaning of “non temporal” memory accesses in x86
...s filled the sheer size evicts the first elements, making caching of the writes ineffective.
For this and similar situations, processors provide support for non-temporal write operations. Non-temporal in this context means the data will not be reused soon, so there is no reason to cache it. These n...
Random float number generation
...d() can be used to generate pseudo-random numbers in C++. In combination with RAND_MAX and a little math, you can generate random numbers in any arbitrary interval you choose. This is sufficient for learning purposes and toy programs. If you need truly random numbers with normal distribution, you...
Insert into … values ( SELECT … FROM … )
...
FROM table2
This is standard ANSI SQL and should work on any DBMS
It definitely works for:
Oracle
MS SQL Server
MySQL
Postgres
SQLite v3
Teradata
DB2
Sybase
Vertica
HSQLDB
H2
AWS RedShift
SAP HANA
sha...
How may I sort a list alphabetically using jQuery?
I'm a bit out of my depth here and I'm hoping this is actually possible.
10 Answers
10...
How to add 30 minutes to a JavaScript Date object?
...te object which is 30 minutes later than another Date object. How do I do it with JavaScript?
19 Answers
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How to change Hash values?
I'd like to replace each value in a hash with value.some_method .
12 Answers
12
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How to make PDF file downloadable in HTML link?
...s the data to the user's browser, then they can choose to save the PDF despite their browser settings. The pdf_server.php should look like this:
header("Content-Type: application/octet-stream");
$file = $_GET["file"] .".pdf";
header("Content-Disposition: attachment; filename=" . urlencode($file))...
How to avoid scientific notation for large numbers in JavaScript?
...
There's Number.toFixed, but it uses scientific notation if the number is >= 1e21 and has a maximum precision of 20. Other than that, you can roll your own, but it will be messy.
function toFixed(x) {
if (Math.abs(x) < 1.0) {
var e = parseIn...
How can I parse a YAML file in Python
...
The easiest and purest method without relying on C headers is PyYaml (documentation), which can be installed via pip install pyyaml:
#!/usr/bin/env python
import yaml
with open("example.yaml", 'r') as stream:
try:
print(yaml.safe_load(stream)...