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How to undo the effect of “set -e” which makes bash exit immediately if any command fails?
...et -e in an interactive bash shell, bash will exit immediately if any command exits with non-zero. How can I undo this effect?
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Query a parameter (postgresql.conf setting) like “max_connections”
Does anyone know if it's even possible (and how, if yes) to query a database server setting in PostgreSQL (9.1)?
1 Answer
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Reading/parsing Excel (xls) files with Python
...o, be warned that doing this is a real PITA. The number of caveats is huge and the documentation is lacking and annoying. I ran into many weird bugs and gotchas, some of which took many hours to figure out.
UPDATE: For newer .xlsx files, the recommended library for reading and writing appears to be...
How do I load an org.w3c.dom.Document from XML in a string?
I have a complete XML document in a string and would like a Document object. Google turns up all sorts of garbage. What is the simplest solution? (In Java 1.5)
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$(this) inside of AJAX success not working
...is refers to the jqXHR object of the Ajax call, not the element the event handler was bound to. Learn more about how this works in JavaScript.
Solutions
If ES2015+ is available to you, then using an arrow function would probably be the simplest option:
$.ajax({
//...
success: (json) =&g...
Set variable in jinja
...iable with another variable in jinja. I will explain, I have got a submenu and I would like show which link is active. I tried this:
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Define static method in source-file with declaration in header-file in C++
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You can't. And it makes no sense to do so, since linking the program together would cause unresolved externals to appear.
– x13n
Oct 8 '13 at 10:41
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Injecting $state (ui-router) into $http interceptor causes circular dependency
... $injector to directly get a reference to the desired service is not ideal and could be considered an anti pattern.
Emitting an event is a much more elegant and also decoupled solution.
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Escaping ampersand character in SQL string
I am trying to query a certain row by name in my sql database and it has an ampersand. I tried to set an escape character and then escape the ampersand, but for some reason this isn't working and I'm uncertain as to what exactly my problem is.
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How can I add a string to the end of each line in Vim?
... @dirkgently How can I pass a string variable as an argument to this command (you know, instead of the *) ?
– Matheus Rotta
Sep 4 '17 at 22:24
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