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Regular cast vs. static_cast vs. dynamic_cast [duplicate]
...f it cannot be avoided altogether.
Dynamic cast
This one is only used to convert object pointers and object references into other pointer or reference types in the inheritance hierarchy. It is the only cast that makes sure that the object pointed to can be converted, by performing a run-time check...
Converting BigDecimal to Integer
...rge.
To get the best of both worlds, round off the BigDecimal first, then convert. This also has the benefit of giving you more control over the rounding process.
Spock Groovy Test
void 'test BigDecimal rounding'() {
given:
BigDecimal decimal = new BigDecimal(Integer.MAX_VALUE - 1.99)
...
Encrypt and decrypt a string in C#?
... {
// prepend the IV
msEncrypt.Write(BitConverter.GetBytes(aesAlg.IV.Length), 0, sizeof(int));
msEncrypt.Write(aesAlg.IV, 0, aesAlg.IV.Length);
using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.W...
莱昂氏unix源代码分析 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
...12.4 系统调用 284
12.5 系统调用处理程序 285
12.6 文件sys1.c 285
12.6.1 exec(3020) 285
12.6.2 fork(3322) 286
12.6.3 sbreak(3354) 286
12.7 文件sys2.c和sys3.c 287
12.8 文件sys4.c 287
第13章 软件中断 288
13.1 设置期望动作 288
13.2 对进程...
Get the generated SQL statement from a SqlCommand object?
....AppendLine(";");
sql.AppendLine("select 'Return Value' = convert(varchar, @return_value);");
foreach (SqlParameter sp in sc.Parameters)
{
if ((sp.Direction == ParameterDirection.InputOutput) || (sp.Direction == ParameterDirection...
NumPy or Pandas: Keeping array type as integer while having a NaN value
...Wes, is there any update on this? We run into issues that join columns are converted into either ints or floats, based on the existence of a NA value in the original list. (Creating issues later on when trying to merge these dataframes)
– Carst
Jul 23 '13 at 21...
How to get the current time in milliseconds from C in Linux?
...amp;spec);
s = spec.tv_sec;
ms = round(spec.tv_nsec / 1.0e6); // Convert nanoseconds to milliseconds
if (ms > 999) {
s++;
ms = 0;
}
printf("Current time: %"PRIdMAX".%03ld seconds since the Epoch\n",
(intmax_t)s, ms);
}
If your goal is to measure...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...ython process in question just before the ENOMEM?
Under kernel 2.6, /proc/sys/vm/swappiness controls how aggressively the kernel will turn to swap, and overcommit* files how much and how precisely the kernel may apportion memory with a wink and a nod. Like your facebook relationship status, it's c...
Unique random string generation
... way, but to get something looking like your example, you probably want to convert it to a Base64 string:
Guid g = Guid.NewGuid();
string GuidString = Convert.ToBase64String(g.ToByteArray());
GuidString = GuidString.Replace("=","");
GuidString = GuidString.Replace("+","");
I get r...
Convert JSON String To C# Object
Trying to convert a JSON string into an object in C#. Using a really simple test case:
13 Answers
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