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Maven Install on Mac OS X
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OS X prior to Mavericks (10.9) actually comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications are met, run mvn -version and see some output like this:
Apache Maven 3....
How do I rename a column in a database table using SQL?
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I believe MySQL 8.0 supports this syntax now
– Dan
Apr 23 at 17:41
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How to retry after exception?
... while True:
try:
# do stuff
except SomeSpecificException:
continue
break
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How to extract a substring using regex
...n = Pattern.compile("'(.*?)'");
Matcher matcher = pattern.matcher(mydata);
if (matcher.find())
{
System.out.println(matcher.group(1));
}
Result:
the data i want
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Strip spaces/tabs/newlines - python
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Use str.split([sep[, maxsplit]]) with no sep or sep=None:
From docs:
If sep is not specified or is None, a different splitting algorithm is
applied: runs of consecutive whitespace are regarded as a single
separator, and the result will contain no empty strings at the start
or end if the ...
file_get_contents(“php://input”) or $HTTP_RAW_POST_DATA, which one is better to get the body of JSON
...obj = {plugin: 'jquery-json', version: 2.3};
var encoded = JSON.stringify( js_obj );
var data= encoded
$.ajax({
type: "POST",
url: '1.php',
data: data,
success: function(data){
console.log(data);
}
});
}
</script>
1.php
//print_r($_POST); //empty!!! don't wor...
javac error: Class names are only accepted if annotation processing is explicitly requested
...home/user $ javac Main.java
user@defiant /home/user $
Slap your forehead now and grumble that the error message is so cryptic.
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How to work with Git branches and Rails migrations
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@pisaruk I know you answered this six years ago, but reading I'm curious what an example of a non-reversible migration would be. I'm having a hard time imagining a situation. I guess the simplest would be a dropped column containing a ...
How do I keep Python print from adding newlines or spaces? [duplicate]
In python, if I say
15 Answers
15
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More elegant way of declaring multiple variables at the same time
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As others have suggested, it's unlikely that using 10 different local variables with Boolean values is the best way to write your routine (especially if they really have one-letter names :)
Depending on what you're doing, it may make sense to use a dictionary instead. For examp...