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What is the easiest way to remove all packages installed by pip?
I'm trying to fix up one of my virtualenvs - I'd like to reset all of the installed libraries back to the ones that match production.
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Check if all checkboxes are selected
How do I check if all checkboxes with class="abc" are selected?
9 Answers
9
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Find document with array that contains a specific value
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@AeroWang use this db.person.find( { favouriteFoods: { $all: ["sushi", "sashimi"] } } ) will return all person loving both "sushi" and "sashimi" someone pointed it a few answers below
– benraay
Jul 1 at 14:20
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Mercurial - all files that changed in a changeset?
How can you determine all the files that changed in a given changeset?
7 Answers
7
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What is the most ridiculous pessimization you've seen? [closed]
We all know that premature optimization is the root of all evil because it leads to unreadable/unmaintainable code. Even worse is pessimization, when someone implements an "optimization" because they think it will be faster, but it ends up being slower, as well as being buggy, unmaintainable, etc...
Entity Framework. Delete all rows in table
How I can quickly remove all rows in table using Entity Framework?
21 Answers
21
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What is the difference between “INNER JOIN” and “OUTER JOIN”?
...b;
a | b
--+--
3 | 3
4 | 4
Left outer join
A left outer join will give all rows in A, plus any common rows in B.
select * from a LEFT OUTER JOIN b on a.a = b.b;
select a.*, b.* from a,b where a.a = b.b(+);
a | b
--+-----
1 | null
2 | null
3 | 3
4 | 4
Right outer join
A right outer j...
How do I tell Maven to use the latest version of a dependency?
In Maven, dependencies are usually set up like this:
12 Answers
12
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How to strip all whitespace from string
How do I strip all the spaces in a python string? For example, I want a string like strip my spaces to be turned into stripmyspaces , but I cannot seem to accomplish that with strip() :
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Batch file. Delete all files and folders in a directory
I want to have a batch file that will delete all the folders and files in my cache folder for my wireless toolkit.
15 Answe...