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Best way to format integer as string with leading zeros? [duplicate]
... dynamically create the formatting string, [('{{0:0{0:d}d}}').format(len(my_list)).format(k) for k in my_list]
– Mark
Aug 28 '15 at 8:31
...
Generating a PNG with matplotlib when DISPLAY is undefined
...'/matplotlibrc (as an example, seehttp://matplotlib.org/faq/troubleshooting_faq.html#locating-matplotlib-config-dir). See also matplotlib.org/users/customizing.html, which has an example config file at the bottom of the page. Find "agg" on that page and you'll see the config option you need.
...
Best way to parse command-line parameters? [closed]
...=>
c.copy(libName = k, maxCount = v) } validate { x =>
if (x._2 > 0) success
else failure("Value <max> must be >0")
} keyValueName("<libname>", "<max>") text("maximum count for <libname>")
opt[Unit]("verbose") action { (_, c) =>
c.copy(ver...
Combine two ActiveRecord::Relation objects
...
If you want to combine using AND (intersection), use merge:
first_name_relation.merge(last_name_relation)
If you want to combine using OR (union), use or†:
first_name_relation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
...
Wait for page load in Selenium
...ere
You can expect to show some element. something like in C#:
WebDriver _driver = new WebDriver();
WebDriverWait _wait = new WebDriverWait(_driver, new TimeSpan(0, 1, 0));
_wait.Until(d => d.FindElement(By.Id("Id_Your_UIElement"));
...
How to profile a bash shell script slow startup?
...
PS4='+ $EPOCHREALTIME\011 '
As pointed out by @pawamoy, you can use BASH_XTRACEFD to send the output of the trace to a separate file descriptor if you have Bash 4.1 or later. From this answer:
#!/bin/bash
exec 5> command.txt
BASH_XTRACEFD="5"
echo -n "hello "
set -x
echo -n world
set +x
e...
Detecting a redirect in ajax request?
...ttpRequest object directly.
You can use something like this:
var xhr;
var _orgAjax = jQuery.ajaxSettings.xhr;
jQuery.ajaxSettings.xhr = function () {
xhr = _orgAjax();
return xhr;
};
jQuery.ajax('http://test.com', {
success: function(responseText) {
console.log('responseURL:', xhr.respon...
How do I find out my python path using python?
...ent variable. To query the variable directly, use:
import os
try:
user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
except KeyError:
user_paths = []
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...
How to delete a character from a string using Python
...o), in version 3.X python you should use "//" instead. Also, the line from __future__ import division at the beginning of your script will make version 2.X python act like version 3.X
– Michael Dunn
Aug 24 '10 at 20:29
...
Convert object string to JSON
...hout quote with valid double quote
.replace(/([\$\w]+)\s*:/g, function(_, $1){return '"'+$1+'":'})
// replacing single quote wrapped ones to double quote
.replace(/'([^']+)'/g, function(_, $1){return '"'+$1+'"'})
}
Result
var invalidJSON = "{ hello: 'world',foo:1, bar ...