大约有 23,000 项符合查询结果(耗时:0.0418秒) [XML]

https://stackoverflow.com/ques... 

Received an invalid column length from the bcp client for colid 6

...atabase table schema. To avoid this, try exceeding the data-length of the string datatype in the database table. Hope this helps. share | improve this answer | follow ...
https://stackoverflow.com/ques... 

Pointers in C: when to use the ampersand and the asterisk?

... the pointer. But things work differently when you're working with arrays, strings or when you're calling functions with a pointer copy of a variable. It's difficult to see a pattern of logic inside all of this. ...
https://stackoverflow.com/ques... 

Send Email Intent

....")); Update: According to marcwjj, it seems that on 4.3, we need to pass string array instead of a string for email address to make it work. We might need to add one more line: intent.putExtra(Intent.EXTRA_EMAIL, addresses); // String[] addresses Ref link ...
https://stackoverflow.com/ques... 

How to avoid null checking in Java?

...dition> is a boolean expression and <object> is an object whose toString() method's output will be included in the error. An assert statement throws an Error (AssertionError) if the condition is not true. By default, Java ignores assertions. You can enable assertions by passing the optio...
https://stackoverflow.com/ques... 

How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?

...quires it to work; you tend to find you need the equivalent trick with the stringizing operator too. Section 6.10.3 of the C99 standard covers 'macro replacement', and 6.10.3.1 covers 'argument substitution'. After the arguments for the invocation of a function-like macro have been identified, ...
https://stackoverflow.com/ques... 

What are copy elision and return value optimization?

.... Copy elision is an optimization implemented by most compilers to prevent extra (potentially expensive) copies in certain situations. It makes returning by value or pass-by-value feasible in practice (restrictions apply). It's the only form of optimization that elides (ha!) the as-if rule - copy el...
https://stackoverflow.com/ques... 

Parse (split) a string in C++ using string delimiter (standard C++)

I am parsing a string in C++ using the following: 17 Answers 17 ...
https://stackoverflow.com/ques... 

Mapping many-to-many association table with extra column(s)

...ments java.io.Serializable{ private ACId id = new ACId(); private String extra; public AC(){ } public ACId getId() { return id; } public void setId(ACId id) { this.id = id; } public A getA(){ return getId().getA(); } public C...
https://stackoverflow.com/ques... 

In .NET, which loop runs faster, 'for' or 'foreach'?

...tably faster, why shouldn't you start using it in general? It doesn't take extra time. – DevinB Sep 3 '09 at 13:06 50 ...
https://stackoverflow.com/ques... 

static const vs #define

... String constants specifically are one of those that might benefit from being #defined, at least if they can be used as "building blocks" for bigger string constants. See my reply for an example. – AnT ...