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In c++ what does a tilde “~” before a function name signify?
...scription from ibm.com:
Destructors are usually used to deallocate memory and do other cleanup for a class object and its class members when the object is destroyed. A destructor is called for a class object when that object passes out of scope or is explicitly deleted.
See https://www.ibm.com/sup...
Forgot “git rebase --continue” and did “git commit”. How to fix?
...rebasing code in git, I got some merge conflicts. I resolved the conflicts and did:
4 Answers
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Can't execute jar- file: “no main manifest attribute”
...un it (it's an executable jar) nothing happens. When I run it from the commandline with:
39 Answers
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What is an SSTable?
In BigTable/GFS and Cassandra terminology, what is the definition of a SSTable?
4 Answers
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Assigning default value while creating migration file
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Default migration generator does not handle default values (column modifiers are supported but do not include default or null), but you could create your own generator.
You can also manually update the migration file prior to running rake db:migrate by adding th...
Postgresql: Conditionally unique constraint
...le slower, the advantage of the exclude solution is that it is deferrable (and by default defers until the end of the statement). In contrast, the accepted unique index solution cannot be deferred (and is checked after every row change). So a bulk update is often not possible because steps during th...
what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?
...ly.
This is important in case you have a nested hash with a mix of string and symbol keys and you want to preserve that mix upon decode (for instance, this could happen if your hash contains your own custom objects in addition to highly complex/nested third-party objects whose keys you cannot manip...
Why Collections.sort uses merge sort instead of quicksort?
...es, as there is no notion of
identity as distinct from (value) equality. And the possibility of
quadratic behavior was deemed not to be a problem in practice for
Bentely and McIlroy's implementation (or subsequently for Dual Pivot
Quicksort), which is why these QuickSort variants were used f...
Calculate total seconds in PHP DateInterval
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+1: nice and clean! Note that getTimestamp() method is available in PHP >= 5.3.0.
– Sk8erPeter
Jun 19 '12 at 11:43
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jQuery selector for inputs with square brackets in the name attribute
...attribute selector syntax is [name=value] where name is the attribute name and value is the attribute value.
So if you want to select all input elements with the attribute name having the value inputName[]:
$('input[name="inputName[]"]')
And if you want to check for two attributes (here: name an...