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Show filename and line number in grep output
...need of searching recursively and used this example command: grep -Hnor "localhost" . This listet up all matches with file name and line number, short and concise.
– Tore Aurstad
Sep 10 '18 at 8:25
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How to optimize imports automatically after each save in IntelliJ IDEA
I want to learn how can I automatically optimize imports after each save as we do Eclipse( save actions ).
4 Answers
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Difference between C++03 throw() specifier C++11 noexcept
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Exception specifiers were deprecated because exception specifiers are generally a terrible idea. noexcept was added because it's the one reasonably useful use of an exception specifier: knowing when a function won't throw an exception. Thus it becomes a bi...
invalid target release: 1.7
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On a Mac, where jdk6 and jdk7 are installed, this can be forced in ~/.profile: export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)
– Hank
Feb 10 '14 at 20:31
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Count the occurrences of DISTINCT values
...FIRST row returned, and a count of number of rows in the table, so in this case [Mark, 7]. count(), as an aggregate function works on the entire dataset, suming, counting, or concating the specified field down to one row. Group by subdivides the dataset into chunks based on unique combos of the spe...
How to get last inserted row ID from WordPress database?
My WordPress plugin has a table with a AUTO_INCREMENT primary key field called ID. When a new row is inserted into the table, I'd like to get the ID value of the insertion.
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What is `git diff --patience` for?
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You can read a post from Bram Cohen, the author of the patience diff algorithm, but I found this blog post to summarize the patience diff algorithm very well:
Patience Diff, instead, focuses its energy on the low-frequency high-...
Sorting data based on second column of a file
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You can use the sort command:
sort -k2 -n yourfile
-n, --numeric-sort compare according to string numerical value
For example:
$ cat ages.txt
Bob 12
Jane 48
Mark 3
Tashi 54
$ sort -k2 -n ages.txt
Mark 3
Bob 12
Jane 48
Tashi...
Rails 3 execute custom sql query without a model
... github.com/igorkasyanchuk/execute_sql less code is needed plus you can do it in directly rails console
– Igor Kasyanchuk
Mar 13 '19 at 21:58
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Entity Framework Join 3 Tables
I'm trying to join three tables but I can't understand the method...
2 Answers
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