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How to effectively work with multiple files in Vim
...h> you can add a new tab; and with a regular :q or :wq you close a tab.
If you map :tabn and :tabp to your F7/F8 keys you can easily switch between files.
If there are not that many files or you don't have Vim 7 you can also split your screen in multiple files: :sp <filepath>. Then you can...
or (HTML5)
...<menu>'s type attribute is omitted or set to "toolbar". See the specification for the <li> element and the <menu> element.
– tomekwi
May 27 '15 at 7:31
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DbArithmeticExpression arguments must have a numeric common type
...ent, something like:
var sleeps = context.Sleeps(o =>
DbFunctions.DiffHours(o.ClientDateTimeStamp, clientDateTime) < 24);
Note that the DiffHours method accepts Nullable<DateTime>.
Entity Framwork core (when used with Sql Server, maybe other db providers) supports the DateTime Ad...
What is the difference between functional and non functional requirement? [closed]
What is the difference between functional and non-functional requirements in the context of designing a software system?
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How do I iterate through table rows and cells in JavaScript?
If I have an HTML table...say
9 Answers
9
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What causes javac to issue the “uses unchecked or unsafe operations” warning
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This comes up in Java 5 and later if you're using collections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe way, using generics.
To ge...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
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Please see my answer if you want to get only one count column per group.
– Pedro M Duarte
Sep 26 '15 at 19:43
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Convert Go map to json
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If you had caught the error, you would have seen this:
jsonString, err := json.Marshal(datas)
fmt.Println(err)
// [] json: unsupported type: map[int]main.Foo
The thing is you cannot use integers as keys in JSON; it is for...
mkdir's “-p” option
...ertips: man mkdir yields this about -p switch:
-p, --parents
no error if existing, make parent directories as needed
Use case example: Assume I want to create directories hello/goodbye but none exist:
$mkdir hello/goodbye
mkdir:cannot create directory 'hello/goodbye': No such file or directo...
PostgreSQL Connection URL
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If you use Libpq binding for respective language, according to its documentation URI is formed as follows:
postgresql://[user[:password]@][netloc][:port][/dbname][?param1=value1&...]
Here are examples from same documen...