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How to sum up an array of integers in C#
... @Jørn: the OP asked for a shorter approach. A foreach just substitutes one line of code for another and isn't shorter. Apart from that a foreach is perfectly fine and is more readable.
– Ahmad Mageed
Mar 16 '10 at 11:34
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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...
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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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...
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...
What's the difference between a Python “property” and “attribute”?
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@martineau: Well, there's one extra function call, but most likely the extra work and time will depend on how much the property is doing (general advice: do /not/ use properties to hide I/O).
– Ethan Furman
Jun ...
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
share
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improve this answer
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Is there a command to refresh environment variables from the command prompt in Windows?
...n probably be improved.
ADDED
If you need to export the environment from one cmd window to another, use this script (let's call it exportvars.vbs):
Set oShell = WScript.CreateObject("WScript.Shell")
filename = oShell.ExpandEnvironmentStrings("%TEMP%\resetvars.bat")
Set objFileSystem = CreateObjec...
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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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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