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How can I safely create a nested directory?
...y due to other factors, such as insufficient permissions, full disk, etc.
One option would be to trap the OSError and examine the embedded error code (see Is there a cross-platform way of getting information from Python’s OSError):
import os, errno
try:
os.makedirs(directory)
except OSError...
Bash/sh - difference between && and ;
I normally use ; to combine more than one command in a line, but some people prefer && . Is there any difference? For example, cd ~; cd - and cd ~ && cd - seems to make the same thing. What version is more portable, e.g. will be supported by a bash-subset like Android's shell ...
Start an Activity with a parameter
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One could argue that its better not to do a null check. en.wikipedia.org/wiki/Fail-fast.
– setholopolus
Apr 15 '18 at 23:11
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AngularJS changes URLs to “unsafe:” in extension page
I am trying to use Angular with a list of apps, and each one is a link to see an app in more detail ( apps/app.id ):
6 Answ...
How to get the instance id from within an ec2 instance?
...mple of a more advanced use (retrieve instance ID as well as availability zone and region, etc.):
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
test -n "$EC2_INSTANCE_ID" || die 'cannot obtain instance-id'
EC2_AVAIL_Z...
What does `node --harmony` do?
...t is the equivalent of man node in Windows? :)
– jsalonen
Nov 12 '12 at 22:04
3
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Best way to combine two or more byte arrays in C#
I have 3 byte arrays in C# that I need to combine into one. What would be the most efficient method to complete this task?
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Multiple constructors in python? [duplicate]
... define multiple constructors. However, you can define a default value if one is not passed.
def __init__(self, city="Berlin"):
self.city = city
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Selecting all text in HTML text input when clicked
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@DeanRadcliffe Nice one! I'd use this.setSelectionRange(0, this.value.length) instead.
– kbtz
Mar 10 '14 at 5:59
9
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What are good uses for Python3's “Function Annotations”
...ll never come), the main uses of Python's function annotations will be the one-off uses described in the other answers. For the time being, you can forget about smart static analyzers, compiler assurances, java-based tool chains, etc.
– Raymond Hettinger
Jan 2...