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Find most frequent value in SQL column
...
SELECT `column`,
COUNT(`column`) AS `value_occurrence`
FROM `my_table`
GROUP BY `column`
ORDER BY `value_occurrence` DESC
LIMIT 1;
Replace column and my_table. Increase 1 if you want to see the N most common values of the column.
...
Render basic HTML view?
...te.
Using express 3.0.0 and 3.1.0, the following works:
app.set('views', __dirname + '/views');
app.engine('html', require('ejs').renderFile);
See the comments below for alternative syntax and caveats for express 3.4+:
app.set('view engine', 'ejs');
Then you can do something like:
app.get('/...
input type=“submit” Vs button tag are they interchangeable?
...an INPUT element whose type is set to "image", but the BUTTON element type allows content.
So for functionality only they're interchangeable!
(Don't forget, type="submit" is the default with button, so leave it off!)
shar...
How to find gaps in sequential numbering in mysql?
...rks on table of any size (not just on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -1 FROM arrc_vouchers t3 WHERE t3.id > t1.id) as gap_ends_at
FROM arrc_vouchers t1
WHERE NOT EXISTS (SELECT t2.id FROM arrc_vouchers t2 WHERE t2.id = t1.id + 1)
HAVING gap_ends_at IS ...
Golang tests in sub-directory
...
Note that you can run go test "recursively": you need to list all the packages you want to test.
If you are in the root folder of your Go project, type:
go test ./...
The './...' notation is described in the section "Description of package lists" of the "command go":
An import path is...
Best approach for designing F# libraries for use from both F# and C#
... function that you wrote, so I'll add some higher-level comments. First of all, you should read the F# Component Design Guidelines (referenced already by gradbot). This is a document that explains how to design F# and .NET libraries using F# and it should answer many of your questions.
When using F...
How can I get useful error messages in PHP?
...ple syntax error (wrong bracket, missing semicolon), or a failed function call, or something else entirely.
43 Answers
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ViewBag, ViewData and TempData
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1)TempData
Allows you to store data that will survive for a redirect. Internally it uses the Session as backing store, after the redirect is made the data is automatically evicted. The pattern is the following:
public ActionResult Foo(...
How to lose margin/padding in UITextView?
...of the silliest bugs in iOS.
The class given here, UITextViewFixed is a usually the most reasonable solution overall.
Here is the class:
@IBDesignable class UITextViewFixed: UITextView {
override func layoutSubviews() {
super.layoutSubviews()
setup()
}
func setup() {
...
How do you mock out the file system in C# for unit testing?
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Edit: Install the NuGet package System.IO.Abstractions.
This package did not exist when this answer was originally accepted. The original answer is provided for historical context below:
You could do it by creating an interface:
inter...