Американскому сенатору стало «страшнее, чем когда либо» после брифинга по Ирану02:37
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In short, a proper module is a black box, responsible for an independent flow (i.e. process). Other modules act upon it via its programming API (i.e. calls to class methods). And it doesn’t allow other modules to query its datasource directly (by bypassing the API).