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How to make “if not true condition”?
...$user:" /etc/passwd would be the more correct way to search /etc/passwd incidently – grep -v where -v inverts the search if you wanted to avoid the mess of ||
– Orwellophile
Jun 1 '15 at 16:59
...
Crontab - Run in directory
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
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No route matches “/users/sign_out” devise rails 3
...
I did the test and it works for me. Don't forget that things change from one version to another (be it in Rails or Devise). Besides, logging out is state-changing behaviour which should not be done using GET methods (in my humb...
Fixed stroke width in SVG
I would like to be able to set the stroke-width on an SVG element to be "pixel-aware", that is always be 1px wide regardless of the current scaling transformations applied. I am aware that this may well be impossible, since the whole point of SVG is to be pixel independent.
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Git resolve conflict using --ours/--theirs for all files
...using checkout --ours and --theirs ? I know that you can do it for individual files but couldn't find a way to do it for all.
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What is the difference between compare() and compareTo()?
...eate a Comparator object for the following:
Multiple comparisons. To provide several different ways to sort something. For example, you might want to sort a Person class by name, ID, age, height, ... You would define a Comparator for each of these to pass to the sort() method.
System class To prov...
difference between primary key and unique key
...S it cannot be NULL - e.g. MySQL adds NOT NULL
Primary Key is a unique key identifier of the record
Unique Key:
Can be more than one unique key in one table
Unique key can have NULL values
It can be a candidate key
Unique key can be NULL ; multiple rows can have NULL values and therefore may not...
SQL Server equivalent of MySQL's NOW()?
...URRENT_TIMESTAMP because it works in MySQL, SQL Server, Oracle... As you said, it's the least of our worries but it always helps.
– Álvaro González
Apr 9 '12 at 8:00
add a c...
The maximum recursion 100 has been exhausted before statement completion
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it is just a sample to avoid max recursion error. we have to use option (maxrecursion 365); or option (maxrecursion 0);
DECLARE @STARTDATE datetime;
DECLARE @EntDt datetime;
set @STARTDATE = '01/01/2009';
set @EntDt = '12/31/2009';
declare @dcnt...
ruby send method passing multiple parameters
... puts "#{r.to_s} doesn't respond to #{method_name}"
end
Ref: Black, David A. The well-grounded Rubyist. Manning, 2009. P.171.
*I came here looking for hash syntax for __send__, so may be useful for other googlers. ;)
sh...