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How can I do an asc and desc sort using underscore.js?
I am currently using underscorejs for sort my json sorting. Now I have asked to do an ascending and descending sorting using underscore.js. I do not see anything regarding the same in the documentation. How can I achieve this?
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What's the dSYM and how to use it? (iOS SDK)
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dSYM files store the debug symbols for your app
Services like crashlytics use it to replace the symbols in the crash logs with the appropriate methods names so it will be readable and will make sense.
The benefit of using the dSYM is that you don't need to s...
What exactly does Perl's “bless” do?
...Now when you invoke a method on $object, Perl know which package to search for the method.
If the second argument is omitted, as in your example, the current package/class is used.
For the sake of clarity, your example might be written as follows:
sub new {
my $class = shift;
my $self = { }...
Python JSON serialize a Decimal object
...ich wouldn't work (see my comment below), so...
return (str(o) for o in [o])
return super(DecimalEncoder, self).default(o)
Then use it like so:
json.dumps({'x': decimal.Decimal('5.5')}, cls=DecimalEncoder)
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Are lists thread-safe?
...stead of lists and .pop() . Is this because lists are not thread-safe, or for some other reason?
4 Answers
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What is the combinatory logic equivalent of intuitionistic type theory?
...nators, thus making it point-free. I was wondering what the equivalent was for Agda. I.e., can one make a dependently typed functional programming language equivalent to Agda without using any variables?
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How to pattern match using regular expression in Scala?
...sage of a Map should be replaced by a List, because a Map is unordered and for more values it isn't guaranteed anymore that the right variable matches to the right matcher.
– kiritsuku
Feb 17 '14 at 0:43
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MySQL, Check if a column exists in a table with SQL
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This works well for me.
SHOW COLUMNS FROM `table` LIKE 'fieldname';
With PHP it would be something like...
$result = mysql_query("SHOW COLUMNS FROM `table` LIKE 'fieldname'");
$exists = (mysql_num_rows($result))?TRUE:FALSE;
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Importing files from different folder
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Note: This answer was intended for a very specific question. For most programmers coming here from a search engine, this is not the answer you are looking for. Typically you would structure your files into packages (see other answers) instead of modifying ...
How to delete (not cut) in Vim?
...y delete something: "_d.
Use "_dP to paste something and keep it available for further pasting.
For the second question, you could use <C-o>dw. <C-o> is used to execute a normal command without leaving the insert mode.
You can setup your own mappings to save typing, of course. I have t...