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How to get all properties values of a JavaScript Object (without knowing the keys)?
...se Object.keys, which is not available in IE < 9. See the compatibility table.
ECMAScript 3+
If you have to support older versions of IE, then this is the option for you:
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
var val = obj[key];
// use...
What's the difference between an id and a class?
...tiple students under one Class title, such as Biology. But it's never acceptable to put multiple students under one student ID.
When giving Rules over the school intercom system, you can give Rules to a Class:
"Tomorrow, all students are to wear a red shirt to Biology class."
.Biology {
c...
Get query from java.sql.PreparedStatement [duplicate]
...99 resultset: 0 message: SET sql_mode='NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES'
2016-01-14 10:09:43 INFO MySQL - FETCH created: Thu Jan 14 10:09:43 CST 2016 duration: 1 connection: 19130945 statement: 999 resultset: 0
2016-01-14 10:09:43 INFO MySQL - QUERY created: Thu Jan 14 10:09:43 CST 2016 ...
creating a random number using MYSQL
...andom number to be repeated then you will have to somewhat store in a temp table. So you can check it against with where randnum not in (select * from temptable)...
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Get all column names of a DataTable into string array using (LINQ/Predicate)
...details of your code. But essentially: A DataGrid is not the same as a DataTable.
– Daniel Hilgarth
May 17 '13 at 8:08
3
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Entity Framework code first unique column
...ou will see this error with Entity Framework Code First:
Column 'x' in table 'dbo.y' is of a type that is invalid for use as a key column in an index.
The reason is because of this:
SQL Server retains the 900-byte limit for the maximum total size of all index key columns."
(from: http://...
When should you not use virtual destructors?
...mean every allocated object increases in memory cost by a virtual function table pointer.
So if your program involves allocating a very large number of some object, it would be worth avoiding all virtual functions in order to save the additional 32 bits per object.
In all other cases, you will sav...
How to convert View Model into JSON object in ASP.NET MVC?
...erializer is pretty crap.
doing it in the controller at least makes it testable (although not exactly like the above - you probably want to take an ISerializer as a dependency so you can mock it)
Update also, regarding your JavaScript, it would be good practice to wrap ALL the widget JS you have a...
vertical alignment of text element in SVG
...-direction is the position of the "ideographic"
baseline in the baseline-table of the object being aligned.
W3C Source
Unfortunately, although this is the "correct" way of achieving what you're after it would appear Firefox have not implemented a lot of the presentation attributes for the SVG T...
How can I access Google Sheet spreadsheets only with Javascript?
... even though it's Python code, most API requests have JSON & easily portable to JS):
Migrating SQL data to a Sheet (code deep dive post)
Formatting text using the Sheets API (code deep dive post)
Generating slides from spreadsheet data (code deep dive post)
Those and others in the Sheets API v...