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How can I read a whole file into a string variable
...ror to be reported.
You will get a []byte instead of a string. It can be converted if really necessary:
s := string(buf)
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Why can Java Collections not directly store Primitives types?
...store an int in a List<Integer> the Java compiler will automatically convert it to an Integer.
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Can I query MongoDB ObjectId by date?
...ct and string input */
function objectIdWithTimestamp(timestamp) {
/* Convert string date to Date object (otherwise assume timestamp is a date) */
if (typeof(timestamp) == 'string') {
timestamp = new Date(timestamp);
}
/* Convert date object to hex seconds since Unix epoch ...
Apache Spark: map vs mapPartitions?
...difference between an RDD's map and mapPartitions method?
The method map converts each element of the source RDD into a single element of the result RDD by applying a function. mapPartitions converts each partition of the source RDD into multiple elements of the result (possibly none).
And doe...
std::string formatting like sprintf
... line explanation:
Aim: Write to a char* by using std::snprintf and then convert that to a std::string.
First, we determine the desired length of the char array using a special condition in snprintf. From cppreference.com:
Return value
[...] If the resulting string gets truncated due to ...
AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
1、byte[] 类型（字节数组）的字段：App Inventor 无法直接处理字节数组，但它们可以作为扩展之间的通用 Object 类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishe...
Truncate Two decimal places without rounding
...function for real-world usage of truncating a decimal in C#. This could be converted to a Decimal extension method pretty easy if you wanted:
public decimal TruncateDecimal(decimal value, int precision)
{
decimal step = (decimal)Math.Pow(10, precision);
decimal tmp = Math.Truncate(step * va...
Why do std::shared_ptr work
...t>, given the way you constructed it, is the normal one for Test, which converts the pointer to Test* and deletes it.
When you push your shared_ptr<Test> into the vector of shared_ptr<void>, both of those are copied, although the first one is converted to void*.
So, when the vector ...
constant pointer vs pointer on a constant value [duplicate]
...arse these type of declarations. I also recommend cdecl.org as a site that converts declarations, for example int (*(*foo)(void))[3], into meaningful English text ("declare foo as pointer to function (void) returning pointer to array 3 of int").
– jarmod
Jul 5 ...
What are the main purposes of using std::forward and which problems it solves?
In perfect forwarding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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