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How do I get a platform-dependent new line character?
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In addition to the line.separator property, if you are using java 1.5 or later and the String.format (or other formatting methods) you can use %n as in
Calendar c = ...;
String s = String.format("Duke's Birthday: %1$tm %1$te,%1$tY%n", c);
//Note `%n` at end of line ...
How to find gaps in sequential numbering in mysql?
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answered May 19 '11 at 11:05
mattmatt
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How to enumerate a range of numbers starting at 1
I am using Python 2.5, I want an enumeration like so (starting at 1 instead of 0):
12 Answers
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Ruby on Rails: How can I revert a migration with rake db:migrate?
...want to revert.
eg. if you want to revert a migration with file name 3846656238_create_users.rb
rake db:migrate:down VERSION=3846656238
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Converting int to bytes in Python 3
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185
That's the way it was designed - and it makes sense because usually, you would call bytes on an ...
How do I get a UTC Timestamp in JavaScript?
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157
Dates constructed that way use the local timezone, making the constructed date incorrect. To s...
sort object properties and JSON.stringify
...stringify = require('json-stable-stringify');
var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
console.log(stringify(obj));
Output
{"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8}
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Microbit LED 矩阵 · App Inventor 2 中文网
...程序让 App Inventor 用户能够以编程方式更改 BBC micro:bit 的 5x5 LED 矩阵，方法是编写自定义图案或输入文本字符串。显示屏的滚动速度也可以自定义。
更多链接：
下载 micro:bit LED 矩阵的示例项目。查看 micro:bit LED 矩阵的操作说明...
Is there a REAL performance difference between INT and VARCHAR primary keys?
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Bill KarwinBill Karwin
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