X

Aggregator

Scientists Create Largest 2D Map of the Universe

Slashdot
2 weeks 1 day ago
After 13 years of observations and data processing, astronomers have released the largest two-dimensional map of the universe ever assembled, "offering a sweeping new view of nearly 4 billion celestial objects across roughly three-quarters of the sky," reports Space.com. From the report: The new map, created by the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys team, contains a staggering 5.6 trillion pixels and combines more than 263,000 telescope exposures collected over more than a decade. The observations span visible and near-infrared wavelengths, providing an enormous portrait of stars, galaxies and other cosmic phenomena across the sky, according to a statement from the National Science Foundation (NSF) NOIRLab. "It's part of the fabric of astronomy research now," David Schlegel, co-lead of the Legacy Surveys and a scientist at the U.S. Department of Energy's Lawrence Berkeley National Laboratory, said in a statement. "When you're working with astronomical objects today, you often start by pulling up the Legacy Imaging Viewer to see what you're looking at."

Read more of this story at Slashdot.

BeauHD

CodeSOD: Never Eating the Cookie

The Daily WTF
2 weeks 1 day ago

Maciej works as a freelancer, and that frequently means picking up old PHP code that nobody wants to support.

One project had been lingering for ages with key features missing. Specifically, it was supposed to make HTTP requests to other services on an interval, and use that to populate its data. "The old dev tried, but never got it working." It was Maciej's turn to give it a shot.

$ch = curl_init( $url ); curl_setopt( $ch, CURLOPT_COOKIEFILE, $cookie ); curl_setopt( $ch, CURLOPT_COOKIEJAR, $cookie ); curl_setopt( $ch, CURLOPT_COOKIE, $cookie); // ... many other options set, of course not in a function, just copy-pasted in many locations in the code ... curl_setopt( $ch, CURLOPT_TIMEOUT, $interval ); $s = curl_exec( $ch ); curl_close( $ch );

This particular block of code appeared multiple times in the code. Every place they meant to send an HTTP request, they copy/pasted this code in. The URL would be a different value, but the bulk of the code was just a dozen lines of copy/pasted curl_setopts.

Now, I don't know that they were dreaming that setting CURLOPT_TIMEOUT was setting a recurrence interval. But they do call the value $interval, and I can imagine the ignorant hoping to set up cURL to automatically reinvoke the request on an interval. But even if that's their goal, that's not the actual problem with this code.

They initialize a cURL wrapper, set a pile of options, and then execute the request, storing the result in $s. And do you know what they do with the contents of $s after this?

Nothing.

The request works, perhaps not on an interval, and populates the variable, and they just never use it. The old dev "tried" and never got it working? It seems like they started and got bored.

There was far worse spaghetti code to manage in the project, but it was this gap that really got Maciej's attention.

.comment { border: none; } [Advertisement] Keep all your packages and Docker containers in one place, scan for vulnerabilities, and control who can access different feeds. ProGet installs in minutes and has a powerful free version with a lot of great features that you can upgrade when ready.Learn more.
Remy Porter