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How to replace text between quotes in vi
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Use ci", which means: change what inside the double quotes.
You can also manipulate other text objects in a similar way, e.g.:
ci' - change inside the single quotes
ciw - change inside a word
ci( - change inside parentheses
dit - dele...
Bash if [ false ] ; returns true
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You are running the [ (aka test) command with the argument "false", not running the command false. Since "false" is a non-empty string, the test command always succeeds. To actually run the command, drop the [ command.
if false; then
echo "True"
else
echo "False"
fi
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Wget output document and headers to STDOUT
I'm trying to output document body and its headers to stdout with wget by wget -S -O - http://google.com
5 Answers
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How to assign colors to categorical variables in ggplot2 that have stable mapping?
... best. However, I think it's useful to point out another approach that becomes easier when you're trying to maintain consistent color schemes across multiple data frames that are not all obtained by subsetting a single large data frame. Managing the factors levels in multiple data frames can become ...
Java 8 NullPointerException in Collectors.toMap
...etty, but it works. Result:
1: true
2: true
3: null
(this tutorial helped me the most.)
EDIT:
Unlike Collectors.toMap, this will silently replace values if you have the same key multiple times, as @mmdemirbas pointed out in the comments. If you don't want this, look at the link in the comment.
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Unit Testing AngularJS directive with templateUrl
...g. The template system tries to load the template through $http and it becomes an "unexpected request" to the mock.
What you need a way to pre-load the templates into the $templateCache so that they're already available when Angular asks for them, without using $http.
The Preferred Solution: Karma...
Landscape printing from HTML
...umns. It there a way to do this, without the user having to change the document settings?
16 Answers
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Can virtual functions have default parameters?
...or interface class) and specify a default value for one or more of its parameters, do the derived classes have to specify the same defaults and if not, which defaults will manifest in the derived classes?
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How can I stop a Postgres script when it encounters an error?
... on
there exists much more simple and convenient way - use psql with parameter:
psql -v ON_ERROR_STOP=1
better to use also -X parameter turning off .psqlrc file usage.
Works perfectly for me
p.s. the solution found in great post from Peter Eisentraut. Thank you, Peter!
http://petereisentraut.b...
How to get a URL parameter in Express?
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Express 4.x
To get a URL parameter's value, use req.params
app.get('/p/:tagId', function(req, res) {
res.send("tagId is set to " + req.params.tagId);
});
// GET /p/5
// tagId is set to 5
If you want to get a query parameter ?tagId=5, then use req.q...