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Using Regular Expressions to Extract a Value in Java
... Pattern p = Pattern.compile("\\d+");
Matcher m = p.matcher("hello1234goodboy789very2345");
while(m.find()) {
System.out.println(m.group());
}
}
}
Output:
1234
789
2345
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Converting .NET DateTime to JSON [duplicate]
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you can skip the second replace statement since parseInt('1234abcd') returns 1234 in js
– amd
Feb 11 '13 at 13:03
add a comment
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How to make inline functions in C#
...rg.1
IL_0001: ldc.i4.1
IL_0002: add
IL_0003: ret
} // end of method '<>c'::'<Main>b__0_0'
It's a really short function, but it is a function.
Is this worth any effort to optimize? Nah. Maybe if you're calling it thousands of times a second...
乐高 NXT 对照篇 - 上一代砖头怎么用 · App Inventor 2 中文网
...SPP），同样要先在手机系统设置里配对，配对码同样是 1234。
连接代码和 EV3 实验01 第 1 步一字不差，直接照抄：
when 列表选择器_设备.BeforePicking() {
列表选择器_设备.Elements = 蓝牙客户端1.AddressesAndNames
}
when 列表选择器_设备....
LEGO EV3 机器人传感器面板 · App Inventor 2 中文网
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配对设备：将 EV3 与 Android 设备配对（默认 PIN：1234）
开机：打开 EV3 并确认蓝牙已激活
启动应用：运行应用并从 ListPicker 选择已配对的设备
观察数据：观察屏幕上实时更新的传感器值
测试触碰：按下 EV3 的触碰...
How to format strings in Java
...sing it. For example the following code MessageFormat.format("Number {0}", 1234)); depending on default locale can produce Number 1,234 instead of Number 1234.
– pavel_kazlou
Dec 4 '12 at 10:25
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How do I format a number in Java?
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From this thread, there are different ways to do this:
double r = 5.1234;
System.out.println(r); // r is 5.1234
int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);
// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();
System.out.pri...
What is the correct JSON content type?
... the query parameters passed in the URL.
Example:
{ "Name": "Foo", "Id": 1234, "Rank": 7 }
Content-Type: application/json
JSON-P:
JSON with padding.
Response is JSON data, with a function call wrapped around it.
Example:
functionCall({"Name": "Foo", "Id": 1234, "Rank": 7});
Content-Type:...
How to test valid UUID/GUID?
...]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/.test('01234567-9ABC-DEF0-1234-56789ABCDEF0');
or with brackets
/^\{?[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\}?$/
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Count the number of occurrences of a string in a VARCHAR field?
... CHAR_LENGTH(description) - CHAR_LENGTH( REPLACE ( description, 'value', '1234') )
AS `count`
FROM <table>
The difference is that I replace the "value" string with a 1-char shorter string ("1234" in this case). This way you don't need to divide and round to get an integer valu...