Part of the value of push-based systems is that each node only needs to keep track of its own dependencies and dependents, which makes analysing each node locally easy, but analysing the system as a whole hard. In the extreme case, you might dynamically create and destroy nodes in the tree depending on previous values — this doesn’t make sense for our spreadsheet analogy, but is essentially what’s happening with RxJS’s switchMap operator. Essentially, the more dynamism we want in our system, the harder it is to achieve efficient updates, and the more we want efficient updates, the more we need to specify our dependency graphs up-front.
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Мерц озвучил условие переговоров с РоссиейМерц заявил, что перемирие является условием для переговоров с РФ по Украине
Global weapons flows have grown by almost 10% in the past five years, with Europe more than tripling imports in the wake of the war in Ukraine, a report showed on Monday. The surge can be explained, in part at least, by the fact European countries are buying in weapons to supply to Ukraine and because they are seeking to boost their own military capabilities against a perceived threat from Russia, the Stockholm International Peace Research Institute (SIPRI) said. While imports of weapons to Europe are still not at the levels seen during the cold war, “Europe is now the largest recipient of arms [globally],” Mathew George, director of SIPRI’s Arms Transfers Programme, told AFP.