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What is the difference between Collection and List in Java?

...alized Collection, however. A Collection is just that: a collection of items. You can add stuff, remove stuff, iterate over stuff and query how much stuff is in there. A List adds the information about a defined sequence of stuff to it: You can get the elem>mem>nt at position n, you can add an elem>mem>nt...
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Ant task to run an Ant target only if a file exists?

... that would execute a block only if a given file exists? I have the problem that I have a generic ant script that should do som>mem> special processing but only if a specific configuration file is present. ...
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Find out what process registered a global hotkey? (Windows API)

...A simple app then calls the DLL and reports back its results based on a TTim>mem>r event. If you're interested I can post the Delphi 2007 based code. It's well docum>mem>nted and comm>mem>nted and you potentially could use it as a basis of working out where a key press is going. If you could get the handle of ...
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Reference: Comparing PHP's print and echo

...t source code involves the parser as well as opcode handlers. Consider a simple action such as displaying the number zero. Whether you use echo or print, the sam>mem> handler " ZEND_ECHO_SPEC_CONST_HANDLER" will be invoked. The handler for print does one thing before it invokes the handler for echo, i...
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Secondary axis with twinx(): how to add to legend?

...xes, using twinx() . I also give labels to the lines, and want to show them with legend() , but I only succeed to get the labels of one axis in the legend: ...
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How to check whether a string contains a substring in JavaScript?

Usually I would expect a String.contains() m>mem>thod, but there doesn't seem to be one. 3 Answers ...
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Python中的X[:,0]和X[:,1] - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

Python中的X[:,0]和X[:,1]X[:,0]是numpy中数组的一种写法,表示对一个二维数组,取该二维数组第一维中的所有数据,第二维中取第0个数据,直观来说,X[:,0]就是取所有 X[:,0]是numpy中数组的一种写法,表示对一个二维数组,取该二维...
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In Firebase, is there a way to get the number of children of a node without loading all the node dat

... of data and then counts it client-side, which can be very slow for large amounts of data. Firebase doesn't currently have a way to count children without loading data, but we do plan to add it. For now, one solution would be to maintain a counter of the number of children and update it every tim>mem>...
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Iterate over model instance field nam>mem>s and values in template

...mplate to display the selected instance's field values, along with their nam>mem>s. Think of it as just a standard output of the values of that instance in table format, with the field nam>mem> (verbose_nam>mem> specifically if specified on the field) in the first column and the value of that field in the seco...
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How to convert URL param>mem>ters to a JavaScript object?

... Edit This edit improves and explains the answer based on the comm>mem>nts. var search = location.search.substring(1); JSON.parse('{"' + decodeURI(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g,'":"') + '"}') Example Parse abc=foo&def=%5Basf%5D&xyz=5 in five ste...