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Efficient list of unique strings C#
What is the most efficient way to store a list of strings ignoring any duplicates?
I was thinking a dictionary may be best inserting strings by writing dict[str] = false; and enumerating through the keys as a list. Is that a good solution?
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How do I handle too long index names in a Ruby on Rails ActiveRecord migration?
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According to APIdock the name has to be a string, not a symbol
– Jaco Pretorius
Dec 31 '13 at 14:38
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Escape a dollar sign in string interpolation
How do I escape a dollar sign in string interpolation?
1 Answer
1
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Rails :include vs. :joins
...ment belongs_to a User.
The User model has the following attributes: Name(string), Age(integer). The Comment model has the following attributes:Content, user_id. For a comment a user_id can be null.
Joins:
:joins performs a inner join between two tables. Thus
Comment.joins(:user)
#=> <A...
Why does String.valueOf(null) throw a NullPointerException?
according to the documentation, the method String.valueOf(Object obj) returns:
4 Answers
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How to escape % in String.Format?
I am storing a SQL query in my strings.xml file and I want to use String.Format to build the final string in code. The SELECT statement uses a like, something like this:
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Create RegExps on the fly using string variables
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There's new RegExp(string, flags) where flags are g or i. So
'GODzilla'.replace( new RegExp('god', 'i'), '' )
evaluates to
zilla
share
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Determine version of Entity Framework I am using?
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internal static string GetEntityFrameworkVersion()
{
var version = "";
var assemblies = System.AppDomain.CurrentDomain.GetAssemblies().Select(x => x.FullName).ToList();
foreach(var asm in assemblies)
{
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PDO Prepared Inserts multiple rows in single query
...all it once before the loop with sizeof($datafields) and append the result string to $question_marks[] inside the loop.
– AVIDeveloper
Jun 28 '16 at 7:44
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In PHP what does it mean by a function being binary-safe?
... function will work correctly when you pass it arbitrary binary data (i.e. strings containing non-ASCII bytes and/or null bytes).
For example, a non-binary-safe function might be based on a C function which expects null-terminated strings, so if the string contains a null character, the function wo...