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How to make an empty div take space
...t means the user won't accidentally copy-paste it, pseudo-elements being unselectable by default.
– Domino
Mar 26 '19 at 18:26
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Converting strings to floats in a DataFrame
...hole dataframe or just individual columns. It also gives you an ability to select how to treat stuff that can't be converted to numeric values:
import pandas as pd
s = pd.Series(['1.0', '2', -3])
pd.to_numeric(s)
s = pd.Series(['apple', '1.0', '2', -3])
pd.to_numeric(s, errors='ignore')
pd.to_numer...
push multiple elements to array
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This answer and the selected answer produce different, and perhaps unexpected, results. a.push(1) vs. a.push([1])
– oevna
Dec 24 '16 at 1:12
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How can I set a website image that will show as preview on Facebook?
...press just scroll down to the bottom of the webpage when in edit mode, and select "featured image" (bottom right side of screen).
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Writing to output window of Visual Studio
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I tried this on a set of unit tests. I debugged the selected test, but there was nothing of what I tried to print out in the debug window.
– Frank H.
Apr 22 '15 at 16:13
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Processing Symbol Files in Xcode
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@Ben Window -> Devices -> Select your device at left side -> done
– WINSergey
Jul 9 '17 at 9:22
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How to parse/read a YAML file into a Python object? [duplicate]
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Here is one way to test which YAML implementation the user has selected on the virtualenv (or the system) and then define load_yaml_file appropriately:
load_yaml_file = None
if not load_yaml_file:
try:
import yaml
load_yaml_file = lambda fn: yaml.load(open(fn))
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How to find reason of failed Build without any error or warning
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Build + Intellisense swallowed the error messages.
Selecting Build Only displayed them.
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How to check if a particular service is running on Ubuntu
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For Ubuntu (checked with 12.04)
You can get list of all services and select by color one of them with 'grep':
sudo service --status-all | grep postgres
Or you may use another way if you know correct name of service:
sudo service postgresql status
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How to check null objects in jQuery
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You can use the length property of the jQuery collection returned by your selector:
if ( $('#myDiv').length ){}
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