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Find and Replace Inside a Text File from a Bash Command
...xample: sed -i '.bak' 's/find/replace/' /file.txt You can skip the backup by using an empty string like so: sed -i '' 's/find/replace/' /file.txt
– Austin
Feb 21 '13 at 21:36
8
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Creating an instance of class
...ere.
/* 8 */ Bar* bar3 = new Bar ( Foo::Foo() );
Would work and work by the same principle to 5 and 6 if bar3 wasn't declared on in 7.
5 & 6 contain memory leaks.
Syntax like new Bar ( Foo::Foo() ); is not usual. It's usually new Bar ( (Foo()) ); - extra parenthesis account for most-vexi...
What is the maximum characters for the NVARCHAR(MAX)?
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The max size for a column of type NVARCHAR(MAX) is 2 GByte of storage.
Since NVARCHAR uses 2 bytes per character, that's approx. 1 billion characters.
Leo Tolstoj's War and Peace is a 1'440 page book, containing about 600'000 words - so that might be 6 million characters - wel...
Eager load polymorphic
... Review and Shop since it allows you to eager load in addition to querying by related fields.
The reason that this is necessary is that ActiveRecord cannot build a join based on reviewable alone, since multiple tables represent the other end of the join, and SQL, as far as I know, does not allow yo...
Pointer arithmetic for void pointer in C
...pe (say int , char , float , ..) is incremented, its value is increased by the size of that data type. If a void pointer which points to data of size x is incremented, how does it get to point x bytes ahead? How does the compiler know to add x to value of the pointer?
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Using Linq to group a list of objects into a new grouped list of list of objects
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var groupedCustomerList = userList
.GroupBy(u => u.GroupID)
.Select(grp => grp.ToList())
.ToList();
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MySQL COUNT DISTINCT
...ite
From cp_visits
Where ts >= DATE_SUB(NOW(), INTERVAL 1 DAY)
Group By site_id
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Getting A File's Mime Type In Java
... file must exist on the file system. This does not work with a stream or a byte array, etc.
– Necreaux
Mar 31 '15 at 18:06
3
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How to convert comma-separated String to List?
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Arrays.asList returns a fixed-size List backed by the array. If you want a normal mutable java.util.ArrayList you need to do this:
List<String> list = new ArrayList<String>(Arrays.asList(string.split(" , ")));
Or, using Guava:
List<String> list = Lis...
Rename a git submodule
...pping (like status and diff) behave strangely.
Let "git mv" help here by not only moving the submodule's work tree but also updating the "submodule.<submodule name>.path" setting from the .gitmodules file and stage both.
This doesn't happen when no .gitmodules file is found and only iss...