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List or IList [closed]
...hances you will ever write your own IList that adds anything to the ones already in the .NET framework are so remote that it's theoretical jelly tots reserved for "best practices".
Obviously if you are being asked which you use in an interview, you say IList, smile, and both look pleased at yours...
grep a file, but show several surrounding lines?
...ch and -A num for the number of lines after the match.
grep -B 3 -A 2 foo README.txt
If you want the same number of lines before and after you can use -C num.
grep -C 3 foo README.txt
This will show 3 lines before and 3 lines after.
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How to enable mod_rewrite for Apache 2.2
... configuration has AllowOverride All in order for the .htaccess file to be read at all.
– Adam Rosenfield
Jun 23 '12 at 3:11
3
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How can I rename a field for all documents in MongoDB?
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@Steve name.last is not table.field. If you read the question, you can see that the name field holds an object.
– Marc Dingena
Oct 1 '15 at 8:31
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Creating a div element in jQuery [duplicate]
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You can read about it in the docs at api.jquery.com/jQuery/#jQuery2 (last paragraph of section)
– Gabriele Petrioli
Dec 2 '10 at 10:20
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How to print matched regex pattern using awk?
...out the line, which by default is called a record, denoted by $0. At least read up the documentation.
If you only want to get print out the matched word.
awk '{for(i=1;i<=NF;i++){ if($i=="yyy"){print $i} } }' file
sha...
How do I get IntelliJ to recognize common Python modules?
...inux) as the home path.
Related discussion: http://devnet.jetbrains.net/thread/286883
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How to output git log with the first line only?
...%s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit
Further Reading.
https://coderwall.com/p/euwpig/a-better-git-log
Advanced Reading.
http://durdn.com/blog/2012/11/22/must-have-git-aliases-advanced-examples/
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Truly understanding the difference between procedural and functional
... it primarily expresses intent rather than an explicit algorithm.
Further Reading
This question comes up a lot... see, for example:
What is the difference between procedural programming and functional programming?
Can someone give me examples of functional programming vs imperative/procedural pr...
Counting null and non-null values in a single query
...ount(*) FROM us WHERE a IS NOT NULL
Edited to have the full query, after reading the comments :]
SELECT COUNT(*), 'null_tally' AS narrative
FROM us
WHERE a IS NULL
UNION
SELECT COUNT(*), 'not_null_tally' AS narrative
FROM us
WHERE a IS NOT NULL;
...