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How to filter rows in pandas by regex
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edited Sep 2 at 10:51
ankostis
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answered D...
How can I decode HTML characters in C#?
...tin RobinsonQuintin Robinson
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1
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What is the JUnit XML format specification that Hudson supports?
...ow do you get the failures to look nice then? I would like to manually add new line characters but they don't show up in Jenkins.
– rationalcoder
Aug 6 '15 at 21:37
...
Can you find all classes in a package using reflection?
...t can be used to get all classes in a package:
Reflections reflections = new Reflections("my.project.prefix");
Set<Class<? extends Object>> allClasses =
reflections.getSubTypesOf(Object.class);
share
...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...:
SELECT * FROM Cars;
And then for each Car:
SELECT * FROM Wheel WHERE CarId = ?
In other words, you have one select for the Cars, and then N additional selects, where N is the total number of cars.
Alternatively, one could get all wheels and perform the lookups in memory:
SELECT * FROM Wheel
Thi...
How to pass data from 2nd activity to 1st activity when pressed back? - android
...om Activity2.
For example:
In Activity1, start Activity2 as:
Intent i = new Intent(this, Activity2.class);
startActivityForResult(i, 1);
In Activity2, use setResult for sending data back:
Intent intent = new Intent();
intent.putExtra("editTextValue", "value_here")
setResult(RESULT_OK, intent);...
How do I make a transparent canvas in html5?
... by default, but how do you reset it to transparent and the start of every new animation frame?
– J Sprague
Oct 17 '15 at 4:14
3
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What's the point of the X-Requested-With header?
... in supported browsers, although you will leave old browsers vulnerable.)
New Flash bypass discovered
You may wish to combine this with a token, because Flash running on Safari on OSX can set this header if there's a redirect step. It appears it also worked on Chrome, but is now remediated. More d...
what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?
...
symbolize_keys(parsed)
end
def symbolize_keys(hash)
hash.inject({}){|new_hash, key_value|
key, value = key_value
value = symbolize_keys(value) if value.is_a?(Hash)
new_hash[key.to_sym] = value
new_hash
}
end
As Leventix said, the JSON gem only handles double quoted strings ...
Preloading images with JavaScript
... {
for (var i = 0; i < arguments.length; i++) {
images[i] = new Image();
images[i].src = preload.arguments[i];
}
}
//-- usage --//
preload(
"http://domain.tld/gallery/image-001.jpg",
"http://domain.tld/gallery/image-002.jpg",
"http://domain.tld/gallery/image-0...