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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
..., nil]
[array objectAtIndex:i]
[NSDictionary dictionaryWithObjectsAndKeys: v1, k1, v2, k2, nil];
[dictionary valueForKey:k]
@[a, b, c]
array[i]
@{k1:v1, k2:v2}
dictionary[k]
This part is new. Expression Literals
When you have an expression (M_PI / 16 for example) you should put it insid...
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
...，然后开始搜索它的文档。当解析器识别该文件的指定的位置，它会调用该部分相应的处理程序（如果您已经注册的一个）。该文件被输送到解析器，会被分割成多个片断，并分段装到内存中。因此expat可以解析那些巨大的文件...
How to convert variable (object) name into String [duplicate]
... substitute to get the name of a function argument:
myfunc <- function(v1) {
deparse(substitute(v1))
}
myfunc(foo)
[1] "foo"
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Get the current git hash in a Python script
...g like git.git current tree, I get:
[torvalds@g5 git]$ git describe parent
v1.0.4-14-g2414721
i.e. the current head of my "parent" branch is based on v1.0.4, but since it has a few commits on top of that, describe has added the number of additional commits ("14") and an abbreviated object name for ...
How to directly initialize a HashMap (in a literal way)?
...
can you add "as ImmutableMap.builder.put("k1","v1").put("k2","v2").build()" as the "of" method is limited to 5 pairs at maximum ?
– kommradHomer
Oct 15 '14 at 9:15
...
Git command to display HEAD commit id?
...AD -> master) New commit
fe00287269b07e2e44f25095748b86c5fc50a3ef (tag: v1.1-01) Commit 3
08ed8cceb27f4f5e5a168831d20a9d2fa5c91d8b (tag: v1.1, tag: v1.0-0.1) commit 1
116340f24354497af488fd63f4f5ad6286e176fc (tag: v1.0) second
52c1cdcb1988d638ec9e05a291e137912b56b3af test
...
How do I import a specific version of a package using go get?
...versions as repo urls, without actually creating repos. E.g. gopkg.in/yaml.v1 vs gopkg.in/yaml.v2, even though they both live at https://github.com/go-yaml/yaml
gopkg.in/yaml.v1 redirects to https://github.com/go-yaml/yaml/tree/v1
gopkg.in/yaml.v2 redirects to https://github.com/go-yaml/yaml/tree/...
Initializing a two dimensional std::vector
...nt to initialise a 2 D vector with 0;
vector<vector<int>> v1(5, vector<int>(3,0));
for(int i=0;i<v1.size();i++)
{
for(int j=0;j<v1[i].size();j++)
cout<<v1[i][j]<<" ";
cout<<endl;
}
}
...
STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...收的类型的转换
定位错误
定位到第一个错误行的代码位置：f:\vs2008\vc\include\functional(143) :143行代码：
// TEMPLATE STRUCT less
emplate<class _Ty>
struct less
: public binary_function<_Ty, _Ty, bool>
{ // functor for operator<
bool operator()(const _Ty...
TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...可以看到：
接收端LastByteRead指向了TCP缓冲区中读到的位置，NextByteExpected指向的地方是收到的连续包的最后一个位置，LastByteRcved指向的是收到的包的最后一个位置，我们可以看到中间有些数据还没有到达，所以有数据空白区。...