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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con

...able of a class with the mutable keyword. As far as I can see it simply allows you to modify a variable in a const method: ...
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How to get memory available or used in C#

... It should probably be noted that a call to GetCurrentProcess will itself allocate quite a lot of resources. Call Dispose on the returned process when done, or wrap the whole code in a "using" scope. – Mathias Lykkegaard Lorenzen ...
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What's the optimum way of storing an NSDate in NSUserDefaults?

...hua, thanks for your answer. The reason I tried the silly convoluted float approach was simply because I'd seen another great developer do it and I thought he'd done it for some good reason. Obviously not. I should have more confidence in my own instinct, which was to use setObject:forKey: and have ...
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How do HashTables deal with collisions?

...lookups in hash tables very slow. Option 2: If the hash table entries are all full then the hash table can increase the number of buckets that it has and then redistribute all the elements in the table. The hash function returns an integer and the hash table has to take the result of the hash funct...
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How to get Maven project version to the bash command line

... I'm removing all logging (INFO,WARNING,etc) and 'Download' messages with mvn org.apache.maven.plugins:maven-help-plugin:2.1.1:evaluate -Dexpression=project.version|grep -Ev '(^\[|Download\w+:)' – Chadwick ...
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How to do 3 table JOIN in UPDATE query?

... it had something to do with ON UPDATE CURRENT_TIMESTAMP, I just added manually the update and it fixed it, just saying if it happens to anyone else – eric.itzhak Jun 6 '16 at 13:35 ...
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Creating a new user and password with Ansible

... parameter. There you'll see that your password must be hashed. - hosts: all user: root vars: # created with: # python -c 'import crypt; print crypt.crypt("This is my Password", "$1$SomeSalt$")' password: $1$SomeSalt$UqddPX3r4kH3UL5jq5/ZI. tasks: - user: name=tset password={...
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Make anchor link go some pixels above where it's linked to

... window.scrollTo(window.scrollX, window.scrollY - 100); }); This will allow the browser to do the work of jumping to the anchor for us and then we will use that position to offset from. EDIT 1: As was pointed out by @erb, this only works if you are on the page while the hash is changed. Enter...
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What is a servicebus and when do I need one?

...OSI stack for Ethernet. With the bus, this is the client libraries used by application code. Ultimately, you can view a service bus as providing the next higher level of abstraction for building distributed systems. You can use it also for client-server communication to give you durable one-way mes...
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Regular expression \p{L} and \p{N}

...This syntax is specific for modern Unicode regex implementation, which not all interpreters recognize. You can safely replace \p{L} by {a-zA-Z} (ascii notation) or {\w} (perl/vim notation); and \p{N} by {0-9} (ascii) or {\d} (perl/vim). If you want to match all of them, just do: {a-zA-Z0-9}+ or {\w\...