大约有 45,000 项符合查询结果（耗时：0.0621秒） [XML]
Check if a string is null or empty in XSLT
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323
test="categoryName != ''"
Edit: This covers the most likely interpretation, in my opinion, of...
Do we need semicolon at the end? [duplicate]
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edited Jan 19 '11 at 22:51
answered Oct 23 '10 at 3:00
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What does bundle exec rake mean?
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edited Jan 27 '16 at 22:46
Onato
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How do I decode a URL parameter using C#?
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answered Sep 10 '09 at 12:41
TheVillageIdiotTheVillageIdiot
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How do I import the javax.servlet API in my Eclipse project?
...ntainer-specific libraries like servlet-api.jar, jsp-api.jar, el-api.jar, j2ee.jar, javaee.jar, etc. It would only lead to future portability, compatibility, classpath and maintainability troubles, because your webapp would not work when it's deployed to a servletcontainer of a different make/versio...
Delete column from pandas DataFrame
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edited Apr 7 '19 at 22:01
cs95
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answer...
Create unique constraint with null columns
..., menu_id, recipe_id)
WHERE menu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE menu_id IS NULL;
This way, there can only be one combination of (user_id, recipe_id) where menu_id IS NULL, effectively implementing the desired constraint.
Possible dra...
Finding duplicates in O(n) time and O(1) space
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edited Nov 25 '15 at 9:44
answered Apr 21 '11 at 3:54
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Shadow Effect for a Text in Android? [duplicate]
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207
Perhaps you'd consider using android:shadowColor, android:shadowDx, android:shadowDy, android:...
Adding up BigDecimals using Streams
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3.1. We supply an identity value for addition, namely BigDecimal.ZERO.
3.2. We specify the BinaryOperator<BigDecimal>, which adds two BigDecimal's, via a method reference BigDecimal::add.
Updated answer, after edit
I see that you have added new data, therefore the new answer will become:
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