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Code Issues Releases Wiki Activity

Add synchronization to the Standard plugin.

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This commit is contained in:
Danila Fedorin 2017-09-10 20:17:49 -07:00
parent 8975bfdb99
commit 7cd117dac1
1 changed files with 1 additions and 2 deletions
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core/src/main/java/org/nwapw/abacus/plugin/StandardPlugin.java
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@ -696,8 +696,7 @@ public class StandardPlugin extends Plugin {
* @param n non-negative integer. * @param n non-negative integer.
* @return a number of numClass with value n factorial. * @return a number of numClass with value n factorial.
*/ */
public static NumberInterface factorial(NumberImplementation implementation, int n) { synchronized public static NumberInterface factorial(NumberImplementation implementation, int n) {
if (!FACTORIAL_LISTS.containsKey(implementation)) { if (!FACTORIAL_LISTS.containsKey(implementation)) {
FACTORIAL_LISTS.put(implementation, new ArrayList<>()); FACTORIAL_LISTS.put(implementation, new ArrayList<>());
FACTORIAL_LISTS.get(implementation).add(implementation.instanceForString("1")); FACTORIAL_LISTS.get(implementation).add(implementation.instanceForString("1"));