大约有 30,000 项符合查询结果(耗时:0.0432秒) [XML]
Append TimeStamp to a File Name
...ing a time stamp to the file name with something like this DateTime.Now.ToString().Replace('/', '-').Replace(':', '.') .
Is there a better way to do this?
...
Why can't decimal numbers be represented exactly in binary?
...1/3, 1/9, 1/27, or any rational in decimal notation. We do it by adding an extra symbol. For example, a line over the digits that repeat in the decimal expansion of the number. What we need to represent decimal numbers as a sequence of binary numbers are 1) a sequence of binary numbers, 2) a radix p...
Efficient list of unique strings C#
What is the most efficient way to store a list of strings ignoring any duplicates?
I was thinking a dictionary may be best inserting strings by writing dict[str] = false; and enumerating through the keys as a list. Is that a good solution?
...
django template display item value or empty string
...lt_if_none template filter, (doc).
default_if_none will display the given string if the variable is 'None'.
default will display the string if the variable evaluates to False, ie empty strings, empty lists etc
{{ item.somefield|default_if_none:"" }}
{{ item.somefield|default:"" }}
...
How can I get LINQ to return the object which has the max value for a given property? [duplicate]
...2);
Thanks Nick - Here's the proof
class Program
{
static void Main(string[] args)
{
IEnumerable<Item> items1 = new List<Item>()
{
new Item(){ ClientID = 1, ID = 1},
new Item(){ ClientID = 2, ID = 2},
new Item(){ ClientID = 3...
Populate XDocument from String
...thing and I am trying to figure out whether I can load an XDocument from a string. XDocument.Load() seems to take the string passed to it as a path to a physical XML file.
...
How do I create a nice-looking DMG for Mac OS X using command-line tools?
...Create a new DMG, writeable(!), big enough to hold the expected binary and extra files like readme (sparse might work).
Mount the DMG and give it a layout manually in Finder or with whatever tools suits you for doing that (see FileStorm link at the bottom for a good tool). The background image is us...
How to supply value to an annotation from a Constant java
...
Compile constants can only be primitives and Strings:
15.28. Constant Expressions
A compile-time constant expression is an expression denoting a value of primitive type or a String that does not complete abruptly and is composed using only the following:
Literals of p...
Ignoring a class property in Entity Framework 4.1 Code First
...public class Customer
{
public int CustomerID { set; get; }
public string FirstName { set; get; }
public string LastName{ set; get; }
[NotMapped]
public int Age { set; get; }
}
[NotMapped] attribute is included in the System.ComponentModel.DataAnnotations namespace.
You can al...
How can I easily convert DataReader to List? [duplicate]
... [Field("id")]
public int? CustomerId;
[Field("name")]
public string CustomerName;
}
...
using (DataReader reader = ...)
{
List<CustomerDTO> customers = reader.AutoMap<CustomerDTO>()
.ToList();
}
(AutoMap(), is an extension met...
