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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...uld be to maintain a counter of the number of children and update it every time you add a new child. You could use a transaction to count items, like in this code tracking upvodes:
var upvotesRef = new Firebase('https://docs-examples.firebaseio.com/android/saving-data/fireblog/posts/-JRHTHaIs-jNPLX...
Entity Framework with NOLOCK
... found which less intrusive than actually starting a transactionscope each time, is to simply set the default transaction isolation level on your connection after you've created your object context by running this simple command:
this.context.ExecuteStoreCommand("SET TRANSACTION ISOLATION LEVEL REA...
Setting up connection string in ASP.NET to SQL SERVER
...ny people have copied and pasted that line... :-) I think this is the 30th time I have been to this question.... maybe I should just learn it by heart.
– Ayo Adesina
Jan 26 '15 at 15:28
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How to rollback a specific migration?
I have the following migration file db\migrate\20100905201547_create_blocks.rb
14 Answers
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What does mvn install in maven exactly do
I just started using Maven and I was told to do mvn install in a specific directory.
7 Answers
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Any reason to clean up unused imports in Java, other than reducing clutter?
...u use Eclipse look into Save Actions, which can normalize source code everytime you save.
– Thorbjørn Ravn Andersen
Apr 4 '10 at 15:35
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How does the String class override the + operator?
...t
is convertible (§5.1.8)to a primitive numeric type, or a compile-time error occurs.
In every case, the type of each of the operands of the binary - operator must be
a type that is convertible (§5.1.8) to a primitive numeric type, or a
compile-time error occurs.
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Does Internet Explorer 8 support HTML 5?
Is there any HTML5 support in IE8? Is it on the IE8 roadmap?
13 Answers
13
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HTML table td meaning
In HTML table, what does td stands for? I mean literally, what is it acronym for? Table division? Table data?
8 Answers
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Why shouldn't Java enum literals be able to have generic type parameters?
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Well, erasure takes place at compile-time. But the compiler can use generic type information for type-checks. And then "converts" the generic type to type casts. I'll rephrase the question
– Lukas Eder
Nov 27 '10 at 9:32
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