大约有 16,000 项符合查询结果（耗时：0.0584秒） [XML]
Getting View's coordinates relative to the root layout
...swers. One claims to be faster, and another claims to be easier.
private int getRelativeLeft(View myView) {
if (myView.getParent() == myView.getRootView())
return myView.getLeft();
else
return myView.getLeft() + getRelativeLeft((View) myView.getParent());
}
private int get...
Which, if any, C++ compilers do tail-recursion optimization?
... done for more than a decade), even for mutually recursive calls such as:
int bar(int, int);
int foo(int n, int acc) {
return (n == 0) ? acc : bar(n - 1, acc + 2);
}
int bar(int n, int acc) {
return (n == 0) ? acc : foo(n - 1, acc + 1);
}
Letting the compiler do the optimisation is stra...
To ARC or not to ARC? What are the pros and cons? [closed]
...W, make sure to use of Xcode to do the transition (Edit > Refactor > Convert to Objective-C ARC). During the process Xcode would do a lot of validation to make sure your code would work and figure out any codes that violates those designing guidelines.
– ZhangChn
...
How to grep and replace
...
This touches every file so file times are modified; and converts line endings from CRLF to LF on Windows.
– jww
Oct 25 '17 at 0:21
...
Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did no
...hers to refer.
My loader on the main screen loads the phone book contacts into my data sources in the background.
@Override
public Void loadInBackground() {
Log.v(TAG, "Init loadings contacts");
synchronized (SingleTonProvider.getInstance()) {
PhoneBookManager.p...
C# Object Pooling Pattern implementation
...Pool<T>
{
public static ArrayPool<T> Shared { get; internal set; }
public static ArrayPool<T> Create(int maxBufferSize = <number>, int numberOfBuffers = <number>);
public T[] Rent(int size);
public T[] Enlarge(T[] buffer, int newSi...
Set NOW() as Default Value for datetime datatype?
...
it should work for updates too
Answers by Johan & Leonardo involve converting to a timestamp field. Although this is probably ok for the use case presented in the question (storing RegisterDate and LastVisitDate), it is not a universal solution. See datetime vs timestamp question.
...
How to compare binary files to check if they are the same?
...
I ended up using hexdump to convert the binary files to there hex representation and then opened them in meld / kompare / any other diff tool. Unlike you I was after the differences in the files.
hexdump tmp/Circle_24.png > tmp/hex1.txt
hexdump /tmp...
C default arguments
...al argument that may be present depending on the required arguments, and printf(3) reads a format string that specifies how many arguments there will be. Both use varargs quite safely and effectively, and though you can certainly screw them up, printf() especially seems to be quite popular.
...
C++ 读写xml方法整理（持续更新） - C/C++ - 清泛网 - 专注C/C++及内核技术
...bSucceed)
{
bSucceed = markup.FindElem();
if (bSucceed)
{
markup.IntoElem();
bSucceed = markup.FindElem(_T("update"));
if (bSucceed)
{
_tcsncpy_s(param.version, markup.GetAttrib(_T("ver")), sizeof(param.version));
_tcsncpy_s(param.pkgname, markup.GetAttrib(_T("pkg")), size...