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What does send() do in Ruby?
...
Another example, similar to Antonio Jha's https://stackoverflow.com/a/26193804/1897857
is if you need to read attributes on an object.
For example, if you have an array of strings, if you try to iterate through them and call them on your object, it won't work.
att...
How to get the entire document HTML as a string?
...erializer().serializeToString(document)
in browsers newer than IE 9
See https://caniuse.com/#feat=xml-serializer
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Print current call stack from a method in Python code
... than the exception traceback:
import inspect
print inspect.stack()
See https://gist.github.com/FredLoney/5454553 for a log_stack utility function.
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Specifying column name in a “references” migration
...u can specify the name of the other table in the foreign key options. (see https://github.com/rails/rails/issues/21563 for discussion)
add_reference :posts, :author, foreign_key: {to_table: :users}
Prior to Rails 5, you should add the foreign key as a separate step:
add_foreign_key :posts, :user...
Why can't I do ?
...l; charset=utf-8'>
<title></title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
function showpreview(e) {
var reader = new FileReader();
reader.onload = fun...
Converting an object to a string
...seful
Item: Object {a: 1, b: 2} // Best of both worlds! :)
Reference: https://developer.mozilla.org/en-US/docs/Web/API/Console.log
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jquery save json data object in cookie
...
Try this one:
https://github.com/tantau-horia/jquery-SuperCookie
Quick Usage:
create - create cookie
check - check existance
verify - verify cookie value if JSON
check_index - verify if index exists in JSON
read_values - read cookie value...
Remove Elements from a HashSet while Iterating [duplicate]
...ator().
Each matching element is removed using Iterator.remove().
From:
https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html#removeIf-java.util.function.Predicate-
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How to remove constraints from my MySQL table?
...ck constraints:
ALTER TABLE table_name
DROP CONSTRAINT constraint_name;
https://mariadb.com/kb/en/library/alter-table/
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How to maintain aspect ratio using HTML IMG tag
...eight: 100%;
object-fit: contain;
}
<div>
<img src="https://upload.wikimedia.org/wikipedia/meta/0/08/Wikipedia-logo-v2_1x.png">
</div>
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