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Test if string is a number in Ruby on Rails
... able to call is_number? directly on the string instead of passing it as a param to your helper function, then you need to define is_number? as an extension of the String class, like so:
class String
def is_number?
true if Float(self) rescue false
end
end
And then you can call it with:
m...
using jquery $.ajax to call a PHP function
...ert(output);
}
});
On the server side, the action POST parameter should be read and the corresponding value should point to the method to invoke, e.g.:
if(isset($_POST['action']) && !empty($_POST['action'])) {
$action = $_POST['action'];
switch($action) {
...
Wrapping StopWatch timing with a delegate or lambda?
...f(), 1000));
You could add another overload which omits the "iterations" parameter and calls this version with some default value (like 1000).
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How to bind function arguments without binding this?
...ascript, how can I bind arguments to a function without binding the this parameter?
15 Answers
...
Vertical line using XML drawable
... </shape>
</rotate>
However, the only problem is the layout params defined in your layout xml will be the dimensions used to draw the original shape. Meaning if you want your line to be 30dp tall, you need to define a layout_width of 30dp in your layout xml. But the final width will ...
hadoop No FileSystem for scheme: file
...er = SparkSession.builder
.appName("app_name")
.master("local")
// Various Params
.getOrCreate()
val hadoopConfig: Configuration = sparkBuilder.sparkContext.hadoopConfiguration
hadoopConfig.set("fs.hdfs.impl", classOf[org.apache.hadoop.hdfs.DistributedFileSystem].getName)
hadoopConfig.set("fs.fil...
Web API Put Request generates an Http 405 Method Not Allowed error
...ditional ball buster for me: PUT actions can't bind data to primitive type parameters. I had to change public int PutFluffColor(int Id, int colorCode) to public int PutFluffColor(int Id, UpdateFluffColorModel model)
– Josh Noe
May 1 '15 at 17:31
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Node.js + Express: Routes vs controller
... the controllers folder:
exports.getSub = (req, res, next) => {
req.params.id = req.users.id;
};
Just to make something. I've done projects with no controllers folder, and placed all the logic in one place.
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How to get distinct values for non-key column fields in Laravel?
... Ok, you've added value by showing us that one can also pass params of field names to the get() method (and I've tested also to the first() method), which is equivalent to using the select() method as shown in a few answers here. Though somehow groupBy still seems to score the highest....
MySQL, Check if a column exists in a table with SQL
... This is nicer than the "SHOW COLUMNS" approach below as can be used in parameterized queries reducing the risk of SQL injection. Just wanted to add you can use the DATABASE() function to populate the TABLE_SCHEMA column.
– Andrew
Jul 16 '18 at 10:08
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