CDouble & CDouble Vector
Info
The CDouble & CDouble Vector is a Library for MetaTrader 5 that a library for common rounding methods used in mql development, primitive wrapper class for type (double), and vector for cdouble objects. MQL5 and MQL4 compatible.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use CDouble & CDouble Vector
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
A library for common rounding methods used in MQL development, primitive wrapper class for type (double), and vector for CDouble objects.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: Get Extremums - another powerful library for MetaTrader 5 traders.
A library for common rounding methods used in MQL development, primitive wrapper class for type (double), and vector for CDouble objects. MQL5 and MQL4 compatible!
Also recommended: Inc AD On Array - similar library with strong performance on MetaTrader 5.
CDoubleThe CDouble class wraps a value of the primitive type double in an object. Additionally, this class provides several methods and static methods for rounding doubles and arrays/collections of type double.
Declaration
Title
Inheritance hierarchy
CDouble
Virtual Methods implemented/overridden from class CObject: , , , .
An object of type CDouble contains five data fields:
Before we get any further into the docs, here is a quick practical example of the wrapper class in action:
Another example using the static library methods:
Static Method Summary
Note: It is not necessary to know OOP or use a wrapper class instance in order to make use of this library. All one has to do is call the static functions with CDouble scope resolution. The syntax is as follows:
Examples:
Constructor Summary
Examples:
Assignment Summary - Overloaded Assignment Operators
Note: the = assignment operator can be called in the same line as the declaration.
Examples:
Overloaded Arithmetic Operator Summary
Note: Only
one
arithmetic operator can be used per statement.
Syntax for overloaded operator arithmetic:
Examples:
Overloaded Comparison Operator Summary
Examples:
Instance Method Summary
Precision Control (defaults): digits = 8; step = 1e-08
There are three ways to control precision: Step, Digits, or PrecisionMode(ENUM_PRECISION). Any call to either of these setter methods will override the previous settings.
Step is either the _Point or LOT_STEP or TickSize; represented as a floating point (e.g. 0.00001, 0.025, etc.)
It is not necessary to set the step since RoundToTick and RoundToLot automatically use the appropriate step values for the rounded-return.
Examples:
Virtual Method Summary
Methods overridden from CObject:
See CDoubleVector below for examples.
CDoubleVector
The CDoubleVector class is an object pointer collection specialized for CDouble dynamic instances.
Declaration
Title
Inheritance hierarchy
CDoubleVector
Virtual Methods implemented/overridden from class CArrayObj: .
Instance Method Summary
**See for inherited public methods.
Examples:
You may also like: Matrix operations library - excellent alternative for library users on MetaTrader 5.
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.