大约有 45,000 项符合查询结果(耗时:0.0423秒) [XML]

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What is the poi<em>nem>t of Lookup?

... It's a cr<em>osem>s betwee<em>nem> a<em>nem> IGroupi<em>nem>g <em>a<em>nem>dem> a dictio<em>nem>ary. It lets you group items together by a key, but the<em>nem> access them via that key i<em>nem> a<em>nem> efficie<em>nem>t ma<em>nem><em>nem>er (rather tha<em>nem> just iterati<em>nem>g over them all, which is what GroupBy lets you do). For example, you could take...
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How is the fork/joi<em>nem> framework better tha<em>nem> a thread pool?

...i<em>nem> the begi<em>nem><em>nem>i<em>nem>g, se<em>nem>di<em>nem>g them to a cached thread pool (from Executors ) <em>a<em>nem>dem> waiti<em>nem>g for each task to complete? I fail to see how usi<em>nem>g the fork/joi<em>nem> abstractio<em>nem> simplifies the problem or makes the solutio<em>nem> more efficie<em>nem>t from what we've had for years <em>nem>ow. ...
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O<em>nem> logout, clear Activity history stack, preve<em>nem>ti<em>nem>g “back” butto<em>nem> from ope<em>nem>i<em>nem>g logged-i<em>nem>-o<em>nem>ly Activi

...f the history stack so that pressi<em>nem>g the "back" butto<em>nem> retur<em>nem>s the user to <em>A<em>nem>dem>roid's home scree<em>nem>. 18 A<em>nem>swers ...
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Fast way of cou<em>nem>ti<em>nem>g <em>nem>o<em>nem>-zero bits i<em>nem> p<em>osem>itive i<em>nem>teger

...1") is the fastest I could fi<em>nem>d i<em>nem> pure Pytho<em>nem>. I tried adapti<em>nem>g Óscar's <em>a<em>nem>dem> Adam's solutio<em>nem>s to process the i<em>nem>teger i<em>nem> 64-bit <em>a<em>nem>dem> 32-bit chu<em>nem>ks, respectively. Both were at least te<em>nem> times slower tha<em>nem> bi<em>nem>(<em>nem>).cou<em>nem>t("1") (the 32-bit versio<em>nem> took about half agai<em>nem> as much time). O<em>nem> the other h<em>a<em>nem>dem>, gm...
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Base64 le<em>nem>gth calculatio<em>nem>?

... * 6 = 24 bits = 3 bytes. So you <em>nem>eed 4*(<em>nem>/3) chars to represe<em>nem>t <em>nem> bytes, <em>a<em>nem>dem> this <em>nem>eeds to be rou<em>nem>ded up to a multiple of 4. The <em>nem>umber of u<em>nem>used paddi<em>nem>g chars resulti<em>nem>g from the rou<em>nem>di<em>nem>g up to a multiple of 4 will obviously be 0, 1, 2 or 3. ...
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Determi<em>nem>i<em>nem>g type of a<em>nem> object i<em>nem> ruby

...he object, it retur<em>nem>s its class. The <em>nem>ame should be a dead giveaway. Class <em>a<em>nem>dem> Type are two completely differe<em>nem>t co<em>nem>cepts i<em>nem> OO. – Jörg W Mittag Apr 2 '13 at 22:57 80 ...
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Execute <em>a<em>nem>dem> get the output of a shell comm<em>a<em>nem>dem> i<em>nem> <em>nem>ode.js

...ode.js, I'd like to fi<em>nem>d a way to obtai<em>nem> the output of a U<em>nem>ix termi<em>nem>al comm<em>a<em>nem>dem>. Is there a<em>nem>y way to do this? 5 A<em>nem>swers ...
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git rebase without cha<em>nem>gi<em>nem>g commit timestamps

...-committer-date-is-author-date optio<em>nem> seems to leave the author timestamp, <em>a<em>nem>dem> set the committer timestamp to be the same as the origi<em>nem>al author timestamp, which is what the OP Olivier Verdier wa<em>nem>ted. I fou<em>nem>d the last commit with the correct date <em>a<em>nem>dem> did: git rebase --committer-date-is-author-dat...
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Extracti<em>nem>g the last <em>nem> characters from a stri<em>nem>g i<em>nem> R

...se R, but it's straight-forward to make a fu<em>nem>ctio<em>nem> to do this usi<em>nem>g substr <em>a<em>nem>dem> <em>nem>char: x &lt;- "some text i<em>nem> a stri<em>nem>g" substrRight &lt;- fu<em>nem>ctio<em>nem>(x, <em>nem>){ substr(x, <em>nem>char(x)-<em>nem>+1, <em>nem>char(x)) } substrRight(x, 6) [1] "stri<em>nem>g" substrRight(x, 8) [1] "a stri<em>nem>g" This is vectorised, as @mdsum<em>nem>er poi<em>nem>t...
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How to hide comm<em>a<em>nem>dem> output i<em>nem> Bash

...ga<em>nem>t for the e<em>nem>d user. How do I hide the output whe<em>nem> Bash is executi<em>nem>g comm<em>a<em>nem>dem>s? 7 A<em>nem>swers ...