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What is an existential type?
...hrough the Wikipedia article Existential types . I gathered that they're called existential types because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between
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How can I delete a service in Windows?
I have a couple old services that I want to completely uninstall. How can I do this?
13 Answers
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What should I do if the current ASP.NET session is null?
...ireRequestState runs before control is handed to your Page. So if you are calling other functionality, including static classes, from your page, you should be fine.
If you have some classes doing initialization logic during startup, for example on the Application_Start event or by using a static con...
Clearing purchases from iOS in-app purchase sandbox for a test user
...ases for an address: so tester+01@gmail.com and tester+02@gmail.com both really just go to tester@gmail.com. Probably other email hosts do the same. When you create a test account you need to introduce: first name, last name, email address, password, secret question, secret answer, date of birth, an...
Extracting double-digit months and days from a Python date [duplicate]
..., just make sure to add the number before ":02d", e.g.: {0}/{1:02d}-{2:02d}_{3}.json'.format(othervalue, currentMonth, currentDay, othervalue2)
– Alex
Jul 28 '17 at 8:58
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How to reset index in a pandas dataframe? [duplicate]
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DataFrame.reset_index is what you're looking for. If you don't want it saved as a column, then do:
df = df.reset_index(drop=True)
If you don't want to reassign:
df.reset_index(drop=True, inplace=True)
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PHP DOMDocument loadHTML not encoding UTF-8 correctly
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echo $dom->saveHTML();
This is not a great workaround, but since not all characters can be represented in ISO-8859-1 (like these katana), it's the safest alternative.
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Python List vs. Array - when to use?
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Basically, Python lists are very flexible and can hold completely heterogeneous, arbitrary data, and they can be appended to very efficiently, in amortized constant time. If you need to shrink and grow your list time-efficiently ...
How can I post data as form data instead of a request payload?
In the code below, the AngularJS $http method calls the URL, and submits the xsrf object as a "Request Payload" (as described in the Chrome debugger network tab). The jQuery $.ajax method does the same call, but submits xsrf as "Form Data".
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Convert Json Array to normal Java list
...= new ArrayAdapter<String>(ListViewData.this, android.R.layout.simple_list_item_1, android.R.id.text1, list);
listView.setAdapter(adapter);
listView.setOnItemClickListener(ne