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How to map and remove nil values in Ruby
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Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your ...
Is there any difference between DECIMAL and NUMERIC in SQL Server?
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They are the same. Numeric is functionally equivalent to decimal.
MSDN: decimal and numeric
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Build tree array from flat array in javascript
...ibrary. It's, as far as I can tell, the fastest solution.
function list_to_tree(list) {
var map = {}, node, roots = [], i;
for (i = 0; i < list.length; i += 1) {
map[list[i].id] = i; // initialize the map
list[i].children = []; // initialize the children
}
for (i = 0; i ...
Keeping ASP.NET Session Open / Alive
...n alive as long as the user has the browser window open? Is it timed AJAX calls? I want to prevent the following: sometimes users keep their window open for a long time, then enter stuff, and on submit nothing works anymore because the server side session expired. I don't want to increase the timeou...
Remove Server Response Header IIS7
...stem.webServer. Beware, this will crash your site if UrlRewrite is not installed on the server. And you'd better use the IIS configuration console first to check how it write down those config nodes.
– Frédéric
Sep 4 '15 at 19:31
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Do you get charged for a 'stopped' instance on EC2? [closed]
... can be configured when you create the instance using the command-line EC2 API Tools.
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Can PHP PDO Statements accept the table or column name as parameter?
...DO.
In that case you will simply want to filter and sanitize the data manually. One way to do this is to pass in shorthand parameters to the function that will execute the query dynamically and then use a switch() statement to create a white list of valid values to be used for the table name or col...
How to parse a date? [duplicate]
...format(date);
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JavaDoc: http://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html
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Exec : display stdout “live”
... Simpler: spawn(cmd, argv, { stdio: 'inherit' }). See nodejs.org/api/child_process.html#child_process_options_stdio for different examples.
– Morgan Touverey Quilling
Mar 30 '17 at 14:39
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Stateless and Stateful Enterprise Java Beans
...s. If stateless session beans do not retain their state in between method calls, why is my program acting the way it is?
7 ...