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How to split data into training/testing sets using sample function
...101) # Set Seed so that same sample can be reproduced in future also
# Now Selecting 75% of data as sample from total 'n' rows of the data
sample <- sample.int(n = nrow(data), size = floor(.75*nrow(data)), replace = F)
train <- data[sample, ]
test <- data[-sample, ]
By using caTools pa...
PDO support for multiple queries (PDO_MYSQL, PDO_MYSQLND)
...
Then
try {
$db->query('SET NAMES gbk');
$stmt = $db->prepare('SELECT * FROM 2_1_paidused WHERE NumberRenamed = ? LIMIT 1');
$stmt->execute(array("\xbf\x27 OR 1=1 /*"));
}
catch (PDOException $e){
echo "DataBase Errorz: " .$e->getMessage() .'<br>';
}
catch (Exception $e...
Why is it a bad practice to return generated HTML instead of JSON? Or is it?
...l the response data at once. For example, I have a series of three chained selects, where the selected value of one determines which values are going to be used for populating the second, and so on.
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Reset AutoIncrement in SQL Server after Delete
... a column(column_name) from a table(table1), you can use following query
SELECT MAX(column_name) FROM table1
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Does List guarantee insertion order?
...I have for moving an item down one place in a list:
if (this.folderImages.SelectedIndex > -1 && this.folderImages.SelectedIndex < this.folderImages.Items.Count - 1)
{
string imageName = this.folderImages.SelectedItem as string;
int index = this.folderImages.SelectedIndex;
...
How to display unique records from a has_many through relationship?
...r the SQL DISTINCT stmt (e.g. has_many :products, :through => :orders, :select => "DISTINCT products.*). In the first case, ALL records are fetched and rails removes the duplicates for you. In the later case, only non-duplicate records are fetched from the db so it might offer better performan...
How to center a checkbox in a table cell?
... myTextEditBox
</td>
<td>
<select size ="1" name="myTextEditBox_compare_operator">
<option value="=">equals</option>
<option value="<>">does not equal</option>
</select>
...
An error occurred while signing: SignTool.exe not found
...a program, right-clicking on Microsoft Visual Studio Professional 2015 and selecting Change. A Visual Studio dialog will open up. Select Modify from the set of buttons at the bottom and the above dialog will appear.
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Optimize Font Awesome for only used classes
...e; done
You then use this with FontSquirrel in the expert mode where you select custom subsetting: http://www.fontsquirrel.com/tools/webfont-generator
In Unicode ranges enter the comma separated values from above.
Then to remove unnecessary stuff from the CSS:
egrep "@fa-var-($fa_icons);" less/...
Should I use #define, enum or const?
... this type. To track the current state of a record and to create a mask to select records in certain states. Create an inline function to test if the value of the type is valid for your purpose; as a state marker vs a state mask. This will catch bugs as the typedef is just an int and a value such as...