40 lines
1.1 KiB
Markdown
40 lines
1.1 KiB
Markdown
 | [← Utils](../README.md)
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# Utils/FA
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Shared base classes used across the ecosystem: ATR access, bar control, auto-cleanup, simple logging, diffs and sorting.
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## Main features
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- ATR wrapper for indicator access (`CAtr` and related classes in `Atr.mqh`).
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- Bar-change detection helpers, including per-timeframe variants (`CBarControler`, `CBarControlerFastW1`, `CBarControlerFastMN1`, `CBarControlerFastMinors`).
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- Automatic pointer cleanup on deinit (`CAutoCleaner`).
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- Lightweight logging base used by other modules (`CLoggerBase`).
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- Distance/diff calculators — by points or by ATR (`CDiff`, `CDiffPoint`, `CDiffAtr`).
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- Simple array sorting (`CSimpleSort`).
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## Basic usage
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### Bar control
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```mql5
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CBarControler bar_ctrl;
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bar_ctrl.Init(_Symbol, PERIOD_CURRENT);
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if(bar_ctrl.IsNewBar())
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{
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// new bar logic
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}
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```
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### Auto-cleanup
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```mql5
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CAtr* g_atr = new CAtr();
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g_atr.Create(_Period, _Symbol, 14, true, true);
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CAutoCleaner::AddPtr(g_atr); // will be deleted automatically on deinit
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```
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### Diff by ATR
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```mql5
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CDiffAtr* diff = CreateDiffptr(MODE_DIFF_BY_ATR, _Symbol, g_atr, 0, 1.5);
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```
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> Only the most representative classes are shown here.
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