大约有 40,000 项符合查询结果(耗时:0.0543秒) [XML]

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Database, Table and Column Naming Conventions? [closed]

... wilsonmar.com/sql_adventureworks.htm is an excellent analysis of the AdventureWorks schema. – Daniel Trebbien Jan 11 '11 at 0:40 ...
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Migration: Cannot add foreign key constraint

... $table->increments('id', true); $table->integer('user_id')->unsigned(); $table->string('priority_name'); $table->smallInteger('rank'); $table->text('class'); $table->timestamps('timecreated'); }); Schema::table('priorities'...
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Changes in import statement python3

...a single function. In Python 2 you were permitted to be semi-lazy: def sin_degrees(x): from math import * return sin(degrees(x)) Note that it already triggers a warning in Python 2: a.py:1: SyntaxWarning: import * only allowed at module level def sin_degrees(x): In modern Python 2 co...
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The simplest way to resize an UIImage?

... = UIGraphicsImageRenderer(size: newSize) let image = renderer.image { _ in self.draw(in: CGRect.init(origin: CGPoint.zero, size: newSize)) } return image.withRenderingMode(self.renderingMode) } And here's the Objective-C version: @implementation UIImage (ResizeCategory) - (U...
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How to save a PNG image server-side, from a base64 data string

...plode(';', $data); list(, $data) = explode(',', $data); $data = base64_decode($data); file_put_contents('/tmp/image.png', $data); And as a one-liner: $data = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data)); An efficient method for extracting, decoding, and checking for e...
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Android - Package Name convention

...va, more about which can be read here:* http://en.wikipedia.org/wiki/Java_package#Package_naming_conventions Source: http://www.quora.com/Why-do-a-majority-of-Android-package-names-begin-with-com share | ...
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Python assigning multiple variables to same value? list behavior

...]=1 is actually calling a method on the list object. (It's equivalent to a.__setitem__(0, 1).) So, it's not really rebinding anything at all. It's like calling my_object.set_something(1). Sure, likely the object is rebinding an instance attribute in order to implement this method, but that's not wha...
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How should I print types like off_t and size_t?

I'm trying to print types like off_t and size_t . What is the correct placeholder for printf() that is portable ? 9 ...
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List directory in Go

...il.ReadDir("./") if err != nil { log.Fatal(err) } for _, f := range files { fmt.Println(f.Name()) } } share | improve this answer | foll...
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Swift - Split string over multiple lines

...ed compile-time optimization, even at -Onone. ," adcdownload.apple.com/WWDC_2015/Xcode_7_beta/… – Kostiantyn Koval Jul 31 '15 at 18:19 2 ...