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How to specify more spaces for the delimiter using cut?
Is there any way to specify a field delimiter for more spaces with the cut command? (like " "+) ?
For example: In the following string, I like to reach value '3744', what field delimiter I should say?
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Correct way to use StringBuilder in SQL
... Will that take memory equal to using String like below?
No, it'll cause more memory churn than just the straight concat you quoted. (Until/unless the JVM optimizer sees that the explicit StringBuilder in the code is unnecessary and optimizes it out, if it can.)
If the author of that code wants t...
Add a tooltip to a div
...venting the user from knowing whether a highlighted word will 1) give them more information or 2) take them to another page entirely. In general, bad practice.
– sscirrus
Apr 14 '14 at 22:33
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Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
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What is the difference between background and background-color
...background-color, using the background shorthand you could also add one or more values without repeating any other background-* property more than once.
Which one to choose is essentially up to you, but it could also depend on specific conditions of your style declarations (e.g if you need to overr...
Learning Regular Expressions [closed]
...stand how the building blocks work, differences in syntax amount to little more than mild dialects. A layer on top of your regular expression engine's syntax is the syntax of the programming language you're using. Languages such as Perl remove most of this complication, but you'll have to keep in mi...
When should one use RxJava Observable and when simple Callback on Android?
...ugh with Lambdas it would be getter closer to the Callback variant.
Furthermore, if you have access to the JSON feed, it would be kind of weird to retrieve all photos when you're only displaying the PNGs. Just adjust the feed to it only displays PNGs.
First conclusion
It doesn't make your codebas...
Iterate through object properties
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1171
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Haskell, Lisp, and verbosity [closed]
...-order function (and I include monads, arrows, etc.), but it might require more thinking (but only the first time, and it's fun and you'll be a better programmer for it), and
the static system is sufficiently general that it never gets in your way, and somewhat surprisingly it actually "aids in achi...
How do I check if a string is a number (float)?
... don't think that the code is perfect (but I think it's very close): it is more usual to put only the part being "tested" in the try clause, so I would put the return True in an else clause of the try. One of the reasons is that with the code in the question, if I had to review it, I would have to ...