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Why are C# 3.0 object initializer constructor parentheses optional?
... feature" of object initializers met our bar for "sugary" features. Some points we considered:
the design and specification cost was low
we were going to be extensively changing the parser code that handles object creation anyway; the additional development cost of making the parameter list option...
How to remove single character from a String
...substring(index+1);
Note that the result is a new String (as well as two intermediate String objects), because Strings in Java are immutable.
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last day of month calculation
...nt month. For example it is February of leap year now, so it returns 29 as int.
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MFC的多国语言界面的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
... // TODO: Add your control notification handler code here
static int s_iClickTime = 0;
s_iClickTime++;
CString strPrompt = _T("");
CString strFormat = _T("");
strFormat.LoadString(IDS_STRING_SAMPLE);
strPrompt.Format(strFormat, s_iClickTime...
How to find controls in a repeater header or footer
...olution. Just save a reference to the control.
– Sprintstar
May 18 '12 at 10:21
1
This is a much...
Count number of occurences for each unique value
...
To get an un-dimensioned integer vector that contains the count of unique values, use c().
dummyData = rep(c(1, 2, 2, 2), 25) # Chase's reproducible data
c(table(dummyData)) # get un-dimensioned integer vector
1 2
25 75
str(c(table(dummyData)) ...
How to add and get Header values in WebApi
...g. UserName & Password)
[HttpGet]
public IHttpActionResult GetProduct(int id)
{
System.Net.Http.Headers.HttpRequestHeaders headers = this.Request.Headers;
string token = string.Empty;
string pwd = string.Empty;
if (headers.Contains("username"))
{
token = headers.GetV...
Why can't yield return appear inside a try block with a catch?
...
All the yield statements in an iterator definition are converted to a state in a state machine which effectively uses a switch statement to advance states. If it did generate code for yield statements in a try/catch it would have to duplicate everything in the try block for each ...
How to increment a NSNumber
... and store it in a new NSNumber.
For instance, for an NSNumber holding an integer:
NSNumber *number = [NSNumber numberWithInt:...];
int value = [number intValue];
number = [NSNumber numberWithInt:value + 1];
Or for an NSNumber holding a floating-point number:
NSNumber *number = [NSNumber number...
Pandas count(distinct) equivalent
...
Interestingly enough, very often len(unique()) is a few times (3x-15x) faster than nunique().
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