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OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

.../centos/RPM-GPG-KEY-CentOS-6 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras - mirrors.aliyun.com failovermethod=priority baseurl=http://mirrors.aliyun.com/centos/6.7/extras/$basearch/ http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/...
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Replace all 0 values to NA

... "complete.obs". Typically, however, this is unsatisfactory as it leads to extra information loss. 2. Instead of running some sort of loop, in the solution I use df == 0 vectorization. df == 0 returns (try it) a matrix of the same size as df, with the entries TRUE and FALSE. Further, we are also al...
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How do I serialize an object and save it to a file in Android?

... SharedPreferences.Editor ed=mPrefs.edit(); Gson gson = new Gson(); ed.putString("myObjectKey", gson.toJson(objectToSave)); ed.commit(); Option 2 is twice quicker than option 1 The option 2 inconvenience is that you have to make specific code for read: Gson gson = new Gson(); JsonParser parser=...
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How to remove all line breaks from a string

...match all variants is /\r?\n|\r/ If you want to match all newlines in a string, use a global match, /\r?\n|\r/g respectively. Then proceed with the replace method as suggested in several other answers. (Probably you do not want to remove the newlines, but replace them with other whitespace, f...
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What's the best way to build a string of delimited items in Java?

... it provides a join method very similar to the one you refer to in Ruby: StringUtils.join(java.lang.Iterable,char) Java 8: Java 8 provides joining out of the box via StringJoiner and String.join(). The snippets below show how you can use them: StringJoiner StringJoiner joiner = new StringJoi...
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Escape quotes in JavaScript

... You need to escape the string you are writing out into DoEdit to scrub out the double-quote characters. They are causing the onclick HTML attribute to close prematurely. Using the JavaScript escape character, \, isn't sufficient in the HTML contex...
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C dynamically growing array

...zeof operator, the _Alignof operator, or the unary & operator, or is a string literal used to initialize an array, an expression that has type ''array of type'' is converted to an expression with type ''pointer to type'' that points to the initial element of the array object and is not an lvalue...
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How to quickly check if folder is empty (.NET)?

...EnumerateFileSystemEntries method overloads public bool IsDirectoryEmpty(string path) { IEnumerable<string> items = Directory.EnumerateFileSystemEntries(path); using (IEnumerator<string> en = items.GetEnumerator()) { return !en.MoveNext(); } } EDIT: seeing t...
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Making a property deserialize but not serialize with json.net

...{ get; set; } } enum Fizz { Alpha, Beta, Gamma } class Bang { public string Value { get; set; } } And you want to do this: string json = @"{ ""ObsoleteSetting"" : ""Gamma"" }"; // deserialize Config config = JsonConvert.DeserializeObject<Config>(json); // migrate config.ReplacementS...
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How to convert a string to lower or upper case in Ruby

How do I take a string and convert it to lower or upper case in Ruby? 11 Answers 11 ...