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How is the “greater than” or “>” character used in CSS?
I have seen this character a number of times in CSS files but I have no idea how its used. Can anyone explain it to me and show how they are useful in making a page style easier?
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The Ruby %r{ } expression
...y, for legibility.
Edit:
Note that you can use almost any non-alphabetic character pair instead of '{}'.
These variants work just as well:
%r!/home/user!
%r'/home/user'
%r(/home/user)
Edit 2:
Note that the %r{}x variant ignores whitespace, making complex regexps more readable. Example from Git...
How to open existing project in Eclipse
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Project > Import > General > Select Root Directory > (do NOT select copy projects into workspace). This is useful if you use Eclipse outside scope of Java project as well, such as Ruby projects or C projects.
– JohnMerlino
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View HTTP headers in Google Chrome?
...you don't see any resources - look at tabs area (All | XHR JS and etc) and select All
– Zanshin13
Jan 12 '17 at 10:05
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show 4 more comments...
How to do a LIKE query in Arel and Rails?
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Use .gsub(/[%_]/, '\\\\\0') for escaping MySql wildcard chars.
– aercolino
Aug 30 '13 at 10:58
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show 11 more comments
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Join between tables in two different databases?
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Yes, assuming the account has appropriate permissions you can use:
SELECT <...>
FROM A.table1 t1 JOIN B.table2 t2 ON t2.column2 = t1.column1;
You just need to prefix the table reference with the name of the database it resides in.
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Conversion failed when converting date and/or time from character string while inserting datetime
...s the recommend date/time data types for SQL Server 2008 or newer anyway.
SELECT
CAST('02-21-2012 6:10:00 PM' AS DATETIME2), -- works just fine
CAST('01-01-2012 12:00:00 AM' AS DATETIME2) -- works just fine
Don't ask me why this whole topic is so tricky and somewhat confusing - that...
How to exclude particular class name in CSS selector?
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One way is to use the multiple class selector (no space as that is the descendant selector):
.reMode_hover:not(.reMode_selected):hover
{
background-color: #f0ac00;
}
<a href="" title="Design" class="reMode_design reMode_hover">
<span&...
Oracle query to fetch column names
...r case, I'd imagine the query would look something like:
String sqlStr= "
SELECT column_name
FROM all_tab_cols
WHERE table_name = 'USERS'
AND owner = '" +_db+ "'
AND column_name NOT IN ( 'PASSWORD', 'VERSION', 'ID' )"
Note that with this approach, you risk SQL injection.
EDIT: Uppercase...
How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
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Don't you need to escape the period char between _platformActions and InstallApp?
– rory.ap
Mar 10 '16 at 15:37
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