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How to output only captured groups with sed?
...echo "$str" | sed -rn "s/$D*($d+)$D+($d+)$D*/\1 \2/p"
But, as has been already explained, using a s/…/…/gp command is better:
$ str='This is 75577 a sam33ple 123 text and some 987 numbers'
$ d=[[:digit:]] D=[^[:digit:]]
$ echo "$str" | sed -rn "s/$D*($d+)$D*/\1 /gp"
75577 33 123 987
Tha...
WebException how to get whole response with a body?
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var resp = new StreamReader(ex.Response.GetResponseStream()).ReadToEnd();
dynamic obj = JsonConvert.DeserializeObject(resp);
var messageFromServer = obj.error.message;
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Hash Code and Checksum - what's the difference?
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After reading that, I'm still wondering what the difference is.
– kirk.burleson
Jul 27 '10 at 13:50
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MongoDB: update every document on one field
...ollection.updateMany(filter, update, options)
For more doc of uppdateMany read here
As per your requirement the update code will be like this:
User.updateMany({"created": false}, {"$set":{"created": true}});
here you need to use $set because you just want to change created from true to false. For ...
Declare and initialize a Dictionary in Typescript
... be named anything you like and was designed that way to make it easier to read code. e.g. { [username: string] : IPerson; }
– Guy Park
Aug 6 '18 at 7:26
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HTML - how can I show tooltip ONLY when ellipsis is activated
...ooltips is they don't work on mobile, at least for now. This answer could (read: probably will) break the layout, but it could be adapted to, for example, have a different background color for the hovered element. This still wouldn't work on mobile, but it is another option for desktop.
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Why doesn't Ruby support i++ or i-- (increment/decrement operators)?
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Here is how Matz(Yukihiro Matsumoto) explains it in an old thread:
Hi,
In message "[ruby-talk:02706] X++?"
on 00/05/10, Aleksi Niemelä <aleksi.niemela@cinnober.com> writes:
|I got an idea from http://www.pragprog.com:8080/rubyfaq/rubyfaq-5.html#ss5.3
|and thought to try. ...
Uses of content-disposition in an HTTP response header
...is header is defined in RFC 2183, so that would be the best place to start reading.
Permitted values are those registered with the Internet Assigned Numbers Authority (IANA); their registry of values should be seen as the definitive source.
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Mark parameters as NOT nullable in C#/.NET?
... (null == arg)" instead of "if (arg == null)"? I find the latter easier to read, and the problem the former solves in C doesn't apply to C#.
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How to schedule a function to run every hour on Flask?
...ested by user5547025 is for synchronous tasks which can block the master thread. You will need to spin up a worker thread for it not to block.
– Simon
Feb 11 '18 at 10:54
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