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Simple state machine example in C#?
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425
Let's start with this simple state diagram:
We have:
4 states (Inactive, Active, Paused, ...
Correctly determine if date string is a valid date in that format
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468
You can use DateTime class for this purpose:
function validateDate($date, $format = 'Y-m-d')
...
Maximum length of the textual representation of an IPv6 address?
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45 characters.
You might expect an address to be
0000:0000:0000:0000:0000:0000:0000:0000
8 * 4 + 7 = 39
8 groups of 4 digits with 7 : between them.
But if you have an IPv4-mapped IPv6 address, the last two groups ca...
Bash syntax error: unexpected end of file
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140
I think file.sh is with CRLF line terminators.
run
dos2unix file.sh
then the problem will b...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
注意linux生产环境不能安装32位的mongodb，因为32位受限于操作系统最大2G的文件限制。
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.8.tgz
4、分别在每...
Should I size a textarea with CSS width / height or HTML cols / rows attributes?
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edited Jan 6 '17 at 10:24
tremendows
4,08633 gold badges2828 silver badges4848 bronze badges
answered ...
Decimal separator comma (',') with numberDecimal inputType in EditText
...an EditText with android:inputType="numberDecimal" and android:digits="0123456789.,".
Then add a TextChangedListener to the EditText with the following afterTextChanged:
public void afterTextChanged(Editable s) {
double doubleValue = 0;
if (s != null) {
try {
doubleVal...
How to remove non-alphanumeric characters?
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714
Sounds like you almost knew what you wanted to do already, you basically defined it as a regex.
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vs2008编译boost详细步骤 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...用C++代码直接表达EBNF；
（3）Graph，图组件和算法；
（4）Lambda，在调用的地方定义短小匿名的函数对象，很实用的functional功能；
（5）concept check，检查泛型编程中的concept；
（6）Mpl，用模板实现的元编程框架；
（7）Thread，...
How can I tell how many objects I've stored in an S3 bucket?
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40
There is no way, unless you
list them all in batches of 1000 (which can be slow and suck ban...