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What does @: (at symbol colon) mean in a Makefile?
...his always happens
this always happens
Now, the action part of a rule can be any shell command, including :. Bash help explains this as well as anywhere:
$ help :
:: :
Null command.
No effect; the command does nothing.
Exit Status:
Always succeeds.
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How can I see the specific value of the sql_mode?
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It's only blank for you because you have not set the sql_mode. If you set it, then that query will show you the details:
mysql> SELECT @@sql_mode;
+------------+
| @@sql_mode |
+------------+
| |
+------------+
1 row in set (0.00 sec)
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arrow operator (->) in function heading
I came across the following code:
2 Answers
2
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Undoing a commit in TortoiseSVN
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Don't forget to commit afterwards, because it just merges locally.
– pihentagy
Apr 26 '11 at 10:38
5
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How can I break an outer loop with PHP?
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In the case of 2 nested loops:
break 2;
http://php.net/manual/en/control-structures.break.php
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Index on multiple columns in Ruby on Rails
...arting at the beginning. i.e. if you index on [:user_id, :article_id], you can perform a fast query on user_id or user_id AND article_id, but NOT on article_id.
Your migration add_index line should look something like this:
add_index :user_views, [:user_id, :article_id]
Question regarding 'u...
When editing Microsoft Office VBA, how can I disable the popup “Compile error” messages?
...you want to paste into that line. But, if that partial line isn't syntactically valid, the VBA editor interrupts your work by popping up a "Compile error" message that has to be dismissed.
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PendingIntent does not send Intent extras
...city starts RefreshService with a Intent which has a boolean extra called isNextWeek .
3 Answers
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add maven repository to build.gradle
... and dependencies for the classpath of your build script but not your application.
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MySQL join with where clause
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You need to put it in the join clause, not the where:
SELECT *
FROM categories
LEFT JOIN user_category_subscriptions ON
user_category_subscriptions.category_id = categories.category_id
and user_category_subscriptions.user_id =1
See, with an inner join, putting a clause in the join ...