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How to remove a lua table entry by its key?
I have a lua table that I use as a hashmap, ie with string keys :
1 Answer
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Adding parameter to ng-click function inside ng-repeat doesn't seem to work
...g custom html and compile it using angular in the controller.
var tableContent= '<div>Search: <input ng-model="searchText"></div>'
+'<div class="table-heading">'
+ '<div class="table-col">Customer ID&l...
Populate data table from data reader
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You can load a DataTable directly from a data reader using the Load() method that accepts an IDataReader.
var dataReader = cmd.ExecuteReader();
var dataTable = new DataTable();
dataTable.Load(dataReader);
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Are there conventions on how to name resources?
...nge in time. So its completely normal that naming conventions that were suitable in the beginning will not be suitable after 2 years. And it's completely fine. You should not try to predict future. Just choose a convention and follow it. You will find if it is suitable for you and your project. If i...
Remove Primary Key in MySQL
I have the following table schema which maps user_customers to permissions on a live MySQL database:
12 Answers
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Should MySQL have its timezone set to UTC?
...`timestamp_field`, @@session.time_zone, '+00:00') AS `utc_datetime`
FROM `table_name`
You can also set the sever or global or current session timezone to UTC and then select the timestamp like so:
SELECT `timestamp_field` FROM `table_name`
To select the current datetime in UTC:
SELECT UTC_TIM...
How to trim a string in SQL Server before 2017?
...ou add database constraints to prevent bad data in the future e.g.
ALTER TABLE Customer ADD
CONSTRAINT customer_names__whitespace
CHECK (
Names NOT LIKE ' %'
AND Names NOT LIKE '% '
AND Names NOT LIKE '% %'
);
Also consider disallowing...
Convert char to int in C and C++
...e subtracted from each other. Since 0 comes directly before 1 in the ascii table (and so on until 9), the difference between the two gives the number that the character a represents.
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How to get cumulative sum
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@Franklin Only cost efficient for small tables. Cost grows proportional to the square of the number of rows. SQL Server 2012 allows this to be done much more efficiently.
– Martin Smith
May 18 '13 at 19:57
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Use email address as primary key?
...ies with multiple joins.
If you store information about users in multiple tables, the foreign keys to the users table will be the e-mail address. That means that you store the e-mail address multiple times.
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