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How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
..., bash will exit immediately if any command exits with non-zero. How can I undo this effect?
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How does Spring autowire by name when more than one matching bean is found?
Suppose I have interfaces such as these:
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Scaling Node.js
...airly new to large-scale server-side development. I want to write a server using Node.js, but before I forge ahead I'd like to know what the general principles are for scaling node up to, say, 20 queries per second.
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How do I move a tab in Notepad++ to a new window?
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You can right click the tab and select move to or open in new instance.
This only works for files that are not dirty (when the tab icon is not red).
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CSS: how to add white space before element's content?
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You can use the unicode of a non breaking space :
p:before { content: "\00a0 "; }
See JSfiddle demo
[style improved by @Jason Sperske]
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Are static fields open for garbage collection?
Given an hypothetical utility class that is used only in program setup:
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Can an input field have two labels?
Mary had a little form, and its fields where labeled just so.
Whenever an error crept in, confusion it would sow.
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How to select first and last TD in a row?
How can you select the first and the last TD in a row?
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How to send file contents as body entity using cURL
I am using cURL command line utility to send HTTP POST to a web service. I want to include a file's contents as the body entity of the POST. I have tried using -d </path/to/filename> as well as other variants with type info like --data </path/to/filename> --data-urlencode </path/...
Random row selection in Pandas dataframe
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Something like this?
import random
def some(x, n):
return x.ix[random.sample(x.index, n)]
Note: As of Pandas v0.20.0, ix has been deprecated in favour of loc for label based indexing.
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