大约有 11,643 项符合查询结果(耗时:0.0382秒) [XML]

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What is the advantage to using bloom filters?

...ing in your data set. If it doesn't, no extra work is done. No disk reads, etc. (Which you would have to do if it were a hash or tree, etc). Otherwise, if the filter says "Yes, it's in there", there's a 1% chance that it's wrong, so you do the necessary work to find out. 99% of the time, it really ...
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Center Align on a Absolutely Positioned Div

...over others 99% of the time, you don't have to deal with padding, borders, etc. I've never seen this fail, next time provide an example if it fails for you. – Dan Nov 11 '13 at 18:47 ...
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How can I recall the argument of the previous bash command?

... Also, if you want an arbitrary argument, you can use !!:1, !!:2, etc. (!!:0 is the previous command itself.) See gnu.org/software/bash/manual/bashref.html#History-Interaction – janmoesen Jul 30 '10 at 12:21 ...
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Get table column names in MySQL?

...ick test, SHOW COLUMNS returns a table containing the column names, types, etc, while SELECT COLUMN NAME returns just the column names. – mwfearnley Jul 20 '16 at 16:30 add a ...
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Is there shorthand for returning a default value if None in Python? [duplicate]

... This will return "default" if x is any falsy value, e.g. None, [], "", etc. but is often good enough and cleaner looking. – FogleBird Dec 4 '12 at 19:45 ...
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Changing a specific column name in pandas DataFrame

... the columns here is the simple one which will work for both Default(0,1,2,etc;) and existing columns but not much useful for a larger data sets(having many columns). For a larger data set we can slice the columns that we need and apply the below code: df.columns = ['new_name','new_name1','old_nam...
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Recommended way of making React component/div draggable

...anything w/ a higher z-index that gets in the way, then you're toast, // etc. componentDidUpdate: function (props, state) { if (this.state.dragging && !state.dragging) { document.addEventListener('mousemove', this.onMouseMove) document.addEventListener('mouseup', this.onM...
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Can I target all tags with a single selector?

... The jQuery selector for all h tags (h1, h2 etc) is " :header ". For example, if you wanted to make all h tags red in color with jQuery, use: $(':header').css("color","red") share ...
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Convert blob to base64

...ject, I wanted to download an image and then store it as a cached image: fetch(imageAddressAsStringValue) .then(res => res.blob()) .then(blobToBase64) .then(finalResult => { storeOnMyLocalDatabase(finalResult); }); ...
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How to check if a String contains any of some strings

... StringComparison.CurrentCultureIgnoreCase, "string", "many substrings"...etc) – Roma Borodov Jan 8 '17 at 16:20 ...