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Get last n lines of a file, similar to tail
I'm writing a log file viewer for a web application and for that I want to paginate through the lines of the log file. The items in the file are line based with the newest item on the bottom.
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Preserve line breaks in angularjs
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Based on @pilau s answer - but with an improvement that even the accepted answer does not have.
<div class="angular-with-newlines" ng-repeat="item in items">
{{item.description}}
</div>
/* in the css file or in a style block */
.angular-wit...
When do we need curly braces around shell variables?
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In this particular example, it makes no difference. However, the {} in ${} are useful if you want to expand the variable foo in the string
"${foo}bar"
since "$foobar" would instead expand the variable identified by foobar.
Curly braces are also unco...
Can I use git diff on untracked files?
Is it possible to ask git diff to include untracked files in its diff output, or is my best bet to use git add on the newly created files and the existing files I have edited, then use:
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Cutting the videos based on start and end time using ffmpeg
...code differences from other frames, they require all of the data starting with the previous keyframe.
With the mp4 container it is possible to cut at a non-keyframe without re-encoding using an edit list. In other words, if the closest keyframe before 3s is at 0s then it will copy the video starti...
Java Generics: Cannot cast List to List? [duplicate]
Just come across with this problem:
10 Answers
10
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MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
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Rewrite the query into this
SELECT st1.*, st2.relevant_field FROM sometable st1
INNER JOIN sometable st2 ON (st1.relevant_field = st2.relevant_field)
GROUP BY st1.id /* list a unique sometable field here*/
HAVING COUNT(*) > ...
What does (x ^ 0x1) != 0 mean?
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The XOR operation (x ^ 0x1) inverts bit 0. So the expression effectively means: if bit 0 of x is 0, or any other bit of x is 1, then the expression is true.
Conversely the expression is false if x == 1.
So the test is the same as:
if (x != 1)
and is therefo...
Has Facebook sharer.php changed to no longer accept detailed parameters?
We have been opening a sharing popup (via window.open) with the URL like
5 Answers
5
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How to read the value of a private field from a different class in Java?
...e a poorly designed class in a 3rd-party JAR and I need to access one of its private fields. For example,
why should I need to choose private field is it necessary?
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