大约有 6,000 项符合查询结果(耗时:0.0208秒) [XML]

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What is base 64 encoding used for?

... In a langange like php, were will binary data come from. We almost always work with string data which is text. – Cholthi Paul Ttiopic Sep 5 '16 at 14:02 ...
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How do I split a string so I can access item x?

... ) returns table AS return ( with tokens(p, a, b) AS ( select cast(1 as bigint), cast(1 as bigint), charindex(@separator, @str) union all select p + 1, b + 1, charindex(@separator, @str, b + 1) from tokens where b > 0 ) sele...
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Providing a default value for an Optional in Swift?

... { return defaultValue } } } however the need to cast value as T is an ugly hack. Ideally, there should be a way to assert that T is the same as the type contained in the Optional. As it stands, type inferencing sets T based on the parameter given to getOrElse, and then fai...
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How to truncate string using SQL server

... You can also use the Cast() operation : Declare @name varchar(100); set @name='....'; Select Cast(@name as varchar(10)) as new_name share | i...
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How to get all columns' names for all the tables in MySQL?

... <?php $table = 'orders'; $query = "SHOW COLUMNS FROM $table"; if($output = mysql_query($query)): $columns = array(); while($result = mysql_fetch_assoc($output)): $...
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Find and replace with sed in directory and sub directories

... worked for me: find ./ -type f -exec sed -i '' 's#NEEDLE#REPLACEMENT#' *.php {} \; share | improve this answer | follow | ...
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Composer: how can I install another dependency without updating old ones?

...sues with Laravel and mcrypt: check that it's properly enabled in your CLI php.ini. If php -m doesn't list mcrypt then it's missing. Important: Don't forget to specify new/package when using composer update! Omitting that argument will cause all dependencies, as well as composer.lock, to be updated...
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composer: How to find the exact version of a package?

... php composer.phar show -a and php composer.phar show package/name are also both helpful. – bishop Aug 26 '14 at 1:04 ...
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.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?

...t it is not created. Additionally, using the zero-length object results in casting(s) within the toArray() - method. See the source of ArrayList.toArray(): public <T> T[] toArray(T[] a) { if (a.length < size) // Make a new array of a's runtime type, but my contents: re...
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Generic TryParse

...nverter(typeof(T)); if(converter != null) { // Cast ConvertFromString(string text) : object to (T) return (T)converter.ConvertFromString(input); } return default(T); } catch (NotSupportedException) { return default(T); }...