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How can I sanitize user input with PHP?
..., you must escape the string with MySQL's function for this purpose (mysqli_real_escape_string). (Or, in case of databases, using prepared statements are a better approach, when possible.)
Another example is HTML: If you embed strings within HTML markup, you must escape it with htmlspecialchars. Th...
Why Would I Ever Need to Use C# Nested Classes [duplicate]
...like this ...
class A
{
//used to help implement A
class B
{
A m_a;
internal B(A a) { m_a = a; }
...methods of B can access private members of the m_a instance...
}
...etc...
}
... and constructed from a method of A using code like this ...
//create an instance of B, whose ...
C++ sorting and keeping track of indexes
...; // std::iota
#include <algorithm> // std::sort, std::stable_sort
using namespace std;
template <typename T>
vector<size_t> sort_indexes(const vector<T> &v) {
// initialize original index locations
vector<size_t> idx(v.size());
iota(idx.begin(), id...
Mongoose subdocuments vs nested schema
...g to the docs, it's exactly the same.
However, using a Schema would add an _id field as well (as long as you don't have that disabled), and presumably uses some more resources for tracking subdocs.
Alternate declaration syntax
New in v3 If you don't need access to the sub-document schema instance,...
How do I install cURL on cygwin?
...
How to install the lynx .
– qg_java_17137
Aug 21 '18 at 7:11
Not working for me. It did some pr...
Test PHP headers with PHPUnit
...olated process. Here is an example
<?php
class FooTest extends PHPUnit_Framework_TestCase
{
/**
* @runInSeparateProcess
*/
public function testBar()
{
header('Location : http://foo.com');
}
}
This will result in:
$ phpunit FooTest.php
PHPUnit 3.6.10 by Sebas...
How to drop all tables in a SQL Server database?
...ECLARE @Sql NVARCHAR(500) DECLARE @Cursor CURSOR
SET @Cursor = CURSOR FAST_FORWARD FOR
SELECT DISTINCT sql = 'ALTER TABLE [' + tc2.TABLE_SCHEMA + '].[' + tc2.TABLE_NAME + '] DROP [' + rc1.CONSTRAINT_NAME + '];'
FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc1
LEFT JOIN INFORMATION_SCHEMA.TABLE_...
Split column at delimiter in data frame [duplicate]
...b','b|c','x|y'))
library(splitstackshape)
cSplit(df, "FOO", "|")
# ID FOO_1 FOO_2
# 1 11 a b
# 2 12 b c
# 3 13 x y
This particular function also handles splitting multiple columns, even if each column has a different delimiter:
df <- data.frame(ID=11:13,
...
Storing time-series data, relational or non?
...
Create a file, name it 1_2.data. weired idea? what you get:
You save up to 50% of space because you don't need to repeat the fk_to_device and fk_to_metric value for every data point.
You save up even more space because you don't need any indices.
...
How to get the name of enumeration value in Swift?
...sion 2) you can now print type names and enum cases by default using print(_:), or convert to String using String's init(_:) initializer or string interpolation syntax. So for your example:
enum City: Int {
case Melbourne = 1, Chelyabinsk, Bursa
}
let city = City.Melbourne
print(city)
// print...