大约有 2,000 项符合查询结果(耗时:0.0222秒) [XML]

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CSS '>' selector; what is it? [duplicate]

...ered Dec 16 '10 at 10:44 David MårtenssonDavid Mårtensson 7,10044 gold badges2727 silver badges4646 bronze badges ...
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PHP best way to MD5 multi-dimensional array?

...bottom of post): serialize() 1c4f1064ab79e4722f41ab5a8141b210 1ad0f2c7e690c8e3cd5c34f7c9b8573a json_encode() db7178ba34f9271bfca3a05c5dddf502 c9661c0852c2bd0e26ef7951b4ca9e6f Sorted serialize() 1c4f1064ab79e4722f41ab5a8141b210 1c4f1064ab79e4722f41ab5a8141b210 Sorted json_encode()...
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Linking R and Julia?

...red Aug 12 '15 at 17:06 Martin MächlerMartin Mächler 3,8962222 silver badges2424 bronze badges ...
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On design patterns: When should I use the singleton?

The glorified global variable - becomes a gloried global class. Some say breaking object-oriented design. 19 Answers ...
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Schema for a multilanguage database

...PROD_Id, PROD_i18n_Cust_Lang_Id, PROD_i18n_Cust_Text) VALUES (1, 2, N'Orangäsaft'); -- Swiss German, if you wonder And then query the data: DECLARE @__in_lang_id int SET @__in_lang_id = ( SELECT Lang_ID FROM T_Languages WHERE Lang_ISO_TwoLetterName = 'DE' ) SELECT PROD_Id ...
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Equals(=) vs. LIKE

...duce results different from the = comparison operator: mysql> SELECT 'ä' LIKE 'ae' COLLATE latin1_german2_ci; +-----------------------------------------+ | 'ä' LIKE 'ae' COLLATE latin1_german2_ci | +-----------------------------------------+ | 0 | +------...
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Set transparent background of an imageview on Android

...ctor. Some opacity code: Hex Opacity Values 100% — FF 95% — F2 90% — E6 85% — D9 80% — CC 75% — BF 70% — B3 65% — A6 60% — 99 55% — 8C 50% — 80 45% — 73 40% — 66 35% — 59 30% — 4D 25% — 40 20% — 33 15% — 26 10% — 1A 5% — 0D 0% — 00 You can also set opacit...
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Remove columns from dataframe where ALL values are NA

...tion(x)!all(is.na(x))))),with=F] examples using large data (30 columns, 1e6 rows) big_data <- replicate(10, data.frame(rep(NA, 1e6), sample(c(1:8,NA),1e6,T), sample(250,1e6,T)),simplify=F) bd <- do.call(data.frame,big_data) names(bd) <- paste0('X',seq_len(30)) DT <- as.data.table(bd) ...
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Using awk to remove the Byte-order mark

...t not UTF-16 files without a BOM) to UTF-8 without a BOM: $ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16be>bom-utf16be $ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16le>bom-utf16le $ printf '\ufeffä\n'>bom-utf8 $ printf 'ä\n'|iconv -f utf-8 -t utf-16be>utf16be $ printf 'ä\n'|iconv -f ...
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gradle build fails on lint task

...e inspiration from https://android.googlesource.com/platform/tools/base/+/e6a5b9c7c1bca4da402de442315b5ff1ada819c7 (implementation: https://android.googlesource.com/platform/tools/base/+/e6a5b9c7c1bca4da402de442315b5ff1ada819c7/build-system/gradle/src/main/groovy/com/android/build/gradle/interna...