大约有 15,630 项符合查询结果（耗时：0.0377秒） [XML]
Is JavaScript's “new” keyword considered harmful?
...ntime exception:
if ( !(this instanceof arguments.callee) )
throw new Error("Constructor called as a function");
(Note that this snippet is able to avoid hard-coding the constructor function name, as unlike the previous example it has no need to actually instantiate the object - therefore, it...
Rule-of-Three becomes Rule-of-Five with C++11?
...cial functions. This is good because a missing declaration turns a runtime error into a compilation error now (or at least a warning). As a C++03 compatibility measure some operations are still generated but this generation is deemed deprecated and should at least produce a warning in C++0x mode.
D...
What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
...n Azure WebJob [console]::WriteLine works but Write-Host will result in an error: The Win32 internal error "The handle is invalid" 0x6 occurred while setting character attributes for the console output buffer. Don't ask me why.
– Gil Roitto
Nov 3 '17 at 12:19
...
Do you put unit tests in same project or another project?
...n the same project. When you build a assembly that includes unitTests, any errors in the unitTest will give you an compilereerror, so you must keep your unittest up-to-date, just to build. Having unittest in a seperate project, might cause some developers to forget building the unittest-project, and...
What are some uses of decltype(auto)?
...x6a) is std::initializer_list<int>
decltype(auto) x6d = { 1, 2 }; // error, { 1, 2 } is not an expression
auto *x7a = &i; // decltype(x7a) is int*
decltype(auto)*x7d = &i; // error, declared type is not plain decltype(auto)
...
How to get function parameter names/values dynamically?
...
Solution that is less error prone to spaces and comments would be:
var fn = function(/* whoa) */ hi, you){};
fn.toString()
.replace(/((\/\/.*$)|(\/\*[\s\S]*?\*\/)|(\s))/mg,'')
.match(/^function\s*[^\(]*\(\s*([^\)]*)\)/m)[1]
.split(/,/)
["...
Does JavaScript have “Short-circuit” evaluation?
...hort-circuit" evaluation.
if (true == true || foo.foo){
// Passes, no errors because foo isn't defined.
}
Live DEMO
if (false && foo.foo){
// Passes, no errors because foo isn't defined.
}
Live DEMO
sha...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...
repset:SECONDARY> show tables;
#输出
Sun Dec 29 21:50:48.590 error: { "$err" : "not master and slaveOk=false", "code" : 13435 } at src/mongo/shell/query.js:128
#mongodb默认是从主节点读写数据的，副本节点上不允许读，需要设置副本节点可以读。
repset:S...
Why must we define both == and != in C#?
...our compiled the code in the example program, you will see it runs with no errors. However, if you tried adding the line:
cout << (a != b);
you will get
compiler error C2678 (MSVC) : binary '!=' : no operator found which takes a left-hand operand of type 'Test' (or there is no acceptab...
Use of 'const' for function parameters
...o write int getDouble( const int a ){ //... } that will generate a compile error when finding ++a;.
– dom_beau
Mar 27 '17 at 3:58
...