function print_r_reverse($in) { $lines = explode(“\n”, trim($in)); if (trim($lines[0]) != ‘Array’) { // bottomed out to something that isn’t an array return $in; } else { // this is an array, lets parse it if (preg_match(“/(\s{5,})\(/”, $lines[1], $match)) { // this is a tested array/recursive call to this function // take a set of spaces … Read more
tl;dr If a command’s output results in automatic tabular display (implicit Format-Table), display output can situationally be delayed for up to 300 ms. (see below for why and when), which can have two unexpected effects: As in the question, a subsequent Start-Sleep submitted before the delay has elapsed further delays output for (at least) the … Read more
Lev. Pandas has rewritten to_csv to make a big improvement in native speed. The process is now i/o bound, accounts for many subtle dtype issues, and quote cases. Here is our performance results vs. 0.10.1 (in the upcoming 0.11) release. These are in ms, lower ratio is better. Results: t_head t_baseline ratio name frame_to_csv2 (100k) … Read more
As mg007 suggested, some of the scipy.optimize routines allow for a callback function (unfortunately leastsq does not permit this at the moment). Below is an example using the “fmin_bfgs” routine where I use a callback function to display the current value of the arguments and the value of the objective function at each iteration. import … Read more
<?php ob_start(); echo ‘a’; print ‘b’; // some statement that removes all printed/echoed items ob_end_clean(); echo ‘c’; // the final output is equal to ‘c’, not ‘abc’ ?> Output buffering functions The output buffering functions are also useful in hackery to coerce functions that only print to return strings, ie. <?php ob_start(); var_dump($myVar); $data = … Read more
Use the Xcode report navigator. To show the report navigator, either (1) click the rightmost button in the navigator bar at the top of the navigator area, which is on the left side of the workspace window, (2) select View > Navigators > Reports from the menu bar at the top of the screen, or … Read more
As T-Me correctly inferred before you posted the CreateDatedFolder source, the problem is that the function inadvertently outputs 2 objects, and Join-Path accepts an array of parent paths to each join with the child path. Specifically, it is the New-Item call that accidentally creates an additional output object, just before your return $datedDir call. New-Item … Read more
Using pandas it is very simple to read a csv file directly from a url import pandas as pd data = pd.read_csv(‘https://example.com/passkey=wedsmdjsjmdd’) This will read your data in tabular format, which will be very easy to process
Consider writing to a file. This is an expensive operation. If in your code you write one byte at a time, then each write of a byte is going to be very costly. So a common way to improve performance is to store the data that you are writing in a temporary buffer. Only when … Read more
Here is a solution that works at on any Unix / Linux implementation, assuming it cares to follow the POSIX standard. It works on some non Unix environments like cygwin too. echo ‘ee’ | tee /dev/tty | foo Reference: The Open Group Base Specifications Issue 7 IEEE Std 1003.1, 2013 Edition, ยง10.1: /dev/tty Associated with … Read more