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Adding a new value to an existing ENUM Type
...he new type.
-- 1. rename the enum type you want to change
alter type some_enum_type rename to _some_enum_type;
-- 2. create new type
create type some_enum_type as enum ('old', 'values', 'and', 'new', 'ones');
-- 3. rename column(s) which uses our enum type
alter table some_table rename column some...
How to remove non-alphanumeric characters?
...w what you wanted to do already, you basically defined it as a regex.
preg_replace("/[^A-Za-z0-9 ]/", '', $string);
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Recursively remove files
Does anyone have a solution to remove those pesky ._ and .DS_Store files that one gets after moving files from a Mac to A Linux Server?
...
Python list directory, subdirectory, and files
...
comprehension list: all_files = [os.path.join(path, name) for name in files for path, subdirs, files in os.walk(folder)]
– Nir
Aug 12 '19 at 14:40
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How to verify if a file exists in a batch file?
...ing
)
If you do not need an "else", you can do something like this:
set __myVariable=
IF EXIST "C:\folder with space\myfile.txt" set __myVariable=C:\folder with space\myfile.txt
IF EXIST "C:\some other folder with space\myfile.txt" set __myVariable=C:\some other folder with space\myfile.txt
set _...
MongoDB Aggregation: How to get total records count?
...te(array(
array('$match' => $document),
array('$group' => array('_id' => '$book_id', 'date' => array('$max' => '$book_viewed'), 'views' => array('$sum' => 1))),
array('$sort' => $sort),
// get total, AND preserve the results
array('$group' => array('_id' => nu...
ssl_error_rx_record_too_long and Apache SSL [closed]
...er trying to access one of my sites, and they keep getting this error > ssl_error_rx_record_too_long
15 Answers
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Hide the cursor of an UITextField
...irst, store the text field's selected text range to an instance variable.
_textFieldSelectedTextRange = textField.selectedTextRange;
textField.selectedTextRange = nil; // hides caret
Then, when you want to unhide the caret, simply set the text field's selected text range back to what it was origi...
Backbone.js get and set nested object attribute
...del({
a: {b: 1, c: 2}
});
You can set the attribute "a.b" with:
var _a = _.omit(nestedAttrModel.get('a')); // from underscore.js
_a.b = 3;
nestedAttrModel.set('a', _a);
Now your model will have attributes like:
{a: {b: 3, c: 2}}
with the "change" event fired.
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Is there a Python equivalent of the C# null-coalescing operator?
...instance of a class or None (as long as your class does not define members __nonzero__() and __len__()), it is secure to use the same semantics as the null-coalescing operator.
In fact, it may even be useful to have this side-effect of Python. Since you know what values evaluates to false, you can ...