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Rails select helper - Default selected value, how?
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if params[:pid] is a string, which if it came from a form, it is, you'll probably need to use
params[:pid].to_i
for the correct item to be selected in the select list
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MySQL - UPDATE query based on SELECT Query
... numbered in a unit, and units are numbered in a level (identified using a string ??N), such that one can identify activities using an SKU ie L1U1A1. Those SKUs are then stored in a different table.
I identified the following to get a list of activity_id vs product_id:-
SELECT a.activity_id, w....
What is Normalisation (or Normalization)?
...1 | Toyota
2 | Ford,Cadillac
Here the "Car" column (which is a string) have several values. That offends the first normal form, which says that each cell should have only one value. We can normalize this problem away by have a separate row per car:
UserId | Car
---------------------
1 ...
Android, How can I Convert String to Date?
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From String to Date
String dtStart = "2010-10-15T09:27:37Z";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
try {
Date date = format.parse(dtStart);
System.out.println(date);
} catch...
Create request with POST, which response codes 200 or 201 and content
...ource. Even if it's something trivial like normalizing capitalization of a string. Isn't it a bit dodgy to treat your submitted version as the version the etag was created against?
– Anthony
Aug 30 '16 at 12:57
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What does principal end of an association means in 1:1 relationship in Entity framework
...ou should use:
public class Boo
{
[Key, ForeignKey("Foo")]
public string BooId{get;set;}
public Foo Foo{get;set;}
}
Or fluent mapping
modelBuilder.Entity<Foo>()
.HasOptional(f => f.Boo)
.WithRequired(s => s.Foo);
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Reuse a parameter in String.format?
.... The first argument is referenced by "1$", the second by "2$", etc.
String.format("%1$s %1$s %1$s %1$s %1$s %1$s", hello);
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How do you display JavaScript datetime in 12 hour AM/PM format?
...Balz If minutes is less than 10 (e.g. 16:04), then that statement adds the string "0" so that the formatted output is "4:04 PM" instead of "4:4 PM". Note that in the process, minutes changes from a Number to a String.
– Caleb Bell
Jun 29 '13 at 21:05
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Split a string on whitespace in Go?
Given an input string such as " word1 word2 word3 word4 " , what would be the best approach to split this as an array of strings in Go? Note that there can be any number of spaces or unicode-spacing characters between each word.
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C state-machine design [closed]
... an enum. It also makes for much cleaner code since you don't need all the extra cruft of function pointers or huge switch statements and while loops. Did I mention it's more efficient too?
Here's what a state machine might look like:
void state_machine() {
first_state:
// Do some stuff here
...