大约有 16,000 项符合查询结果（耗时：0.0523秒） [XML]
Why are flag enums usually defined with hexadecimal values
...ively low-level topics where the memory layout of data matters. Using it hints at the fact that that's the situation we're in now.
Also, i'm not sure about C#, but I know that in C x << y is a valid compile-time constant.
Using bit shifts seems the most clear:
[Flags]
public enum MyEnum
{
...
Copy entire contents of a directory to another using php
... path
* @param string $dest Destination path
* @param int $permissions New folder creation permissions
* @return bool Returns true on success, false on failure
*/
function xcopy($source, $dest, $permissions = 0755)
{
$sourceHash = hashDirectory($source);
...
Is there a label/goto in Python?
...d do with a goto using first class functions. For example:
void somefunc(int a)
{
if (a == 1)
goto label1;
if (a == 2)
goto label2;
label1:
...
label2:
...
}
Could be done in python like this:
def func1():
...
def func2():
...
funcmap =...
How to load an ImageView by URL in Android? [closed]
...droid_icon_256.png");
public void onClick(View v) {
startActivity(new Intent(this, IndexActivity.class));
finish();
}
private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public DownloadImageTask(ImageView bmImage) {
this.bmIm...
What are some common uses for Python decorators? [closed]
... def wrapper(*arg):
t = time.clock()
res = func(*arg)
print func.func_name, time.clock()-t
return res
return wrapper
@time_dec
def myFunction(n):
...
share
|
impro...
Android RatingBar change star colors [closed]
...
Step #2: Create your own LayerDrawable XML resources for the RatingBar, pointing to appropriate images to use for the bar. The original styles will point you to the existing resources that you can compare with. Then, adjust your style to use your own LayerDrawable resources, rather than built-in on...
asp.net mvc: why is Html.CheckBox generating an additional hidden input
...ss checkbox and then before you know it we have view state then it evolves into ASP.NET MVCForms.
– The Muffin Man
Apr 15 '15 at 23:16
4
...
What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
... number of digits stored, and the second is the number after the decimal point.
In short: lat DECIMAL(10, 8) NOT NULL, lng DECIMAL(11, 8) NOT NULL
This explains how MySQL works with floating-point data-types.
UPDATE: MySQL supports Spatial data types and Point is a single-value type which can be ...
Get the current language in device
... getDisplayLanguage() will localise the language. If you're interested in just getting the ISO code (e.g. for if or switch statements) use 'Locale.getDefault().getISO3Language();'
– nuala
Jan 24 '12 at 10:25
...
Can I use the range operator with if statement in Swift?
...use the "pattern-match" operator ~=:
if 200 ... 299 ~= statusCode {
print("success")
}
Or a switch-statement with an expression pattern (which uses the pattern-match
operator internally):
switch statusCode {
case 200 ... 299:
print("success")
default:
print("failure")
}
Note that ....