大约有 19,000 项符合查询结果（耗时：0.0455秒） [XML]
How to write multiple line property value using PropertiesConfiguration?
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Check the User Guide for Properties files:
Special Characters and Escaping:
If you need a special character in a property like a line feed, a
tabulation or an unicode character, you can specify it with the same
escaped notation used ...
must appear in the GROUP BY clause or be used in an aggregate function
...ted primary key, resulting in the following incorrect query: SELECT cname, id, MAX(avg) FROM makerar GROUP BY cname;, which did give this misleading error.
– Roberto
Mar 2 at 15:21
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Regex how to match an optional character
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Tim, I honestly am not sure as I didn't write this regex. I'm still pretty new to regex. If you see a better way of writing this, I'm open to suggestions.
– jim
Oct 24 '10 at 6:45
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Find the extension of a filename in Ruby
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Quite old topic but here is the way to get rid of extension separator dot and possible trailing spaces:
File.extname(path).strip.downcase[1..-1]
Examples:
File.extname(".test").strip.downcase[1..-1] # => nil
File.extname(".test.").strip.downcase[1..-1] ...
How to sort the result from string_agg()
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The question was about string_agg. Postgres was incidental to his question and he mentioned it last. The question is useful to others as well.
– nomen
Mar 5 at 17:42
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How to ignore xargs commands if stdin input is empty?
Consider this command:
6 Answers
6
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Specify pane percentage in tmuxinator project
...defined.
First set up your layout just how you like it - you can adjust widths with resize-pane until it is just right for you. Then run tmux list-windows. And then you should be able to use the layout: line from the output unaltered in tmuxinator.conf
So based on the output from your gist:
0: t...
mysqli or PDO - what are the pros and cons? [closed]
...u do like object mapping, it's REALLY cool :
class Student {
public $id;
public $first_name;
public $last_name
public function getFullName() {
return $this->first_name.' '.$this->last_name
}
}
try
{
$dbh = new PDO("mysql:host=$hostname;dbname=school", $user...
Invert “if” statement to reduce nesting
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A return in the middle of the method is not necessarily bad. It might be better to return immediately if it makes the intent of the code clearer. For example:
double getPayAmount() {
double result;
if (_isDead) result = deadAmount();...
Outputting data from unit test in python
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What if I call a method foo inside testSomething and it logs something. How can I see the output for that without passing the logger to foo?
– simao
Nov 2 '10 at 0:57
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