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How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
...ing problems with parsing config file of my app... I discovered it accidentally in vi.
2 Answers
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What is the “reactor” in Maven?
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The reactor is the part of Maven that allows it to execute a goal on a set of modules. As mentioned in the Maven 1.x documentation on multi-modules builds (the reactor concept was already there in Maven 1.x), while modules are discrete unit of work, they can be g...
Is there a python equivalent of Ruby's 'rvm'?
Q: Do we have anything functionally equivalent in Python to the Ruby version manager 'rvm' ?
6 Answers
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SQL Server Index Naming Conventions [closed]
...ems that the primary key index is named PK_ and non-clustered indexes typically start with IX_. Are there any naming conventions beyond that for unique indexes?
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More than 10 lines in a node.js stack error?
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If you'd like to see stack trace that spans over setTimeout/setInterval calls, then more sophisticated https://github.com/mattinsler/longjohn would be the way to go.
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Do I need to explicitly call the base virtual destructor?
...the destructor again as virtual on the inheriting class, but do I need to call the base destructor?
7 Answers
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Return first match of Ruby regex
...]. This is an example output from irb:
irb(main):003:0> names = "erik kalle johan anders erik kalle johan anders"
=> "erik kalle johan anders erik kalle johan anders"
irb(main):004:0> names[/kalle/]
=> "kalle"
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How to check for Is not Null And Is not Empty string in SQL server?
...with NULL or an empty string or a string consisting entirely of spaces are all excluded by this query.
SQL Fiddle
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How to move one word left in the vi editor
... see other motions here:
Vim documentation: motion, 4. Word motions
Generally a Vim command consists of:
count action motion
Where:
count is number of times you want it to execute. The default is 1.
action is obviously an action: d for delete, c for change, default is empty, and it means simpl...
Bash script - variable content as a command to run
...eries.txt | wc -l)
$(perl test.pl test2 $count)
However, if you want to call your Perl command later, and that's why you want to assign it to a variable, then:
#!/bin/bash
count=$(cat last_queries.txt | wc -l)
var="perl test.pl test2 $count" # You need double quotes to get your $count value subst...