大约有 13,340 项符合查询结果（耗时：0.0381秒） [XML]
event Action vs event EventHandler
...ardArgs("Fred"));
//Console.WriteLine($"{HeightSensorTypes.Keyence_IL030}:{(int)HeightSensorTypes.Keyence_IL030}");
Console.ReadLine();
}
private static void SomeSimpleEvent1(int num)
{
Console.WriteLine($"{nameof(SomeSimpleEvent1)}:{num}");
}
private st...
What is the argument for printf that formats a long?
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printf("%ld", ULONG_MAX) outputs the value as -1. Should be printf("%lu", ULONG_MAX) for unsigned long as described by @Blorgbeard below.
– jammus
Nov 12 '11 at 16:03
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Remove spaces from std::string in C++
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The best thing to do is to use the algorithm remove_if and isspace:
remove_if(str.begin(), str.end(), isspace);
Now the algorithm itself can't change the container(only modify the values), so it actually shuffles the values around and returns a pointer to where the end now...
ViewBag, ViewData and TempData
...mple, I set a ViewBag.Title property on all my Views which gets used in my _Layout.cshtml base view file. Another case where I use it is giving info-messages (e.g. "Product saved successfully!") to the users. I placed some generic markup in Layout.cshtml to render a message if provided and this allo...
Querying data by joining two tables in two database on different servers
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You'll need to use sp_addlinkedserver to create a server link. See the reference documentation for usage. Once the server link is established, you'll construct the query as normal, just prefixing the database name with the other server. I.E:
...
Rake just one migration
...n dropped from the database outside of Rails, rake db:migrate:up VERSION=my_version may do nothing, because the schema_migrations table still says it is has been run. In the same situation rake db:migrate:redo VERSION=my_version may fail because it cannot drop the table. In this case, comment out th...
How to delete all the rows in a table using Eloquent?
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Note: truncate() also resets any AUTO_INCREMENT counter (also note you can't truncate tables which have foreign key constraints.)
– William Turrell
Jul 24 '16 at 13:06
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Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
...res? If it doesn't, then this doesn't help.
– duality_
Sep 3 at 9:27
@duality_ If it doesn't, write a patch :)
...
Ruby convert Object to Hash
...book"
@price = 15.95
end
end
gift = Gift.new
hash = {}
gift.instance_variables.each {|var| hash[var.to_s.delete("@")] = gift.instance_variable_get(var) }
p hash # => {"name"=>"book", "price"=>15.95}
Alternatively with each_with_object:
gift = Gift.new
hash = gift.instance_variable...
How to convert a char to a String?
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@BinkanSalaryman using javac 1.8.0_51-b16 and then javap to decompile, I see the constructor/method calls I have in the answer. What are you using?
– Paul Bellora
Jul 24 '15 at 2:55
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