大约有 44,000 项符合查询结果(耗时:0.0554秒) [XML]

https://stackoverflow.com/ques... 

Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application

...lease variant Bonus I set up an alias in my ~/.bash_profile, to make it a 2char command. alias bi="gradlew && adb install -r exampleApp.apk" (Short for Build and Install) share | improve th...
https://stackoverflow.com/ques... 

std::shared_ptr thread safety explained

...pace std; struct A { int a; A(int a) : a(a) {} }; int main(int argc, char **argv) { shared_ptr<A> a(new A(1)); shared_ptr<A> b(a), c(a), d(a); cout << "a: " << a->a << "\tb: " << b->a << "\tc: " << c->a << "\td: " <&...
https://stackoverflow.com/ques... 

Can an enum class be converted to the underlying type?

...t16_t /*v*/) { std::cout << "uint16_t!\n"; } int main(int argc, char* argv[]) { SomeEnum e = B; write(util::underlying_cast(e)); return 0; } share | improve this answer ...
https://stackoverflow.com/ques... 

What is the in a .vimrc file?

...or example, if you find yourself frequently deleting exactly 3 words and 7 characters, you might find it convenient to map a command via nmap <leader>d 3dw7x so that pressing the leader key followed by d will delete 3 words and 7 characters. Because it uses the leader key as a prefix, you can ...
https://stackoverflow.com/ques... 

proper hibernate annotation for byte[]

...dar, java.sql.Date, java.sql.Time, java.sql.Timestamp, byte[], Byte[], char[], Character[], enums, and any other type that implements Serializable. As described in Section 2.8, the use of the Basic annotation is optional for persistent fields and properties of these types. If the Basic...
https://stackoverflow.com/ques... 

getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”

... @t0mm13b: to add more as 600 chars are not enough, you have to investigate first what is really causing this for you. You have also to realize that above is an ugly hack and I am not taking any responsibility if it runs or not (for me was the best soluti...
https://stackoverflow.com/ques... 

What are the most-used vim commands/keypresses?

...g "You can use 'I' for inserting text, or 'a' for appending text after the character, or 'A' for appending text at the end of the line, or…" I can't imagine everyone uses all 20 different keypresses to navigate text, 10 or so keys to start adding text, and 18 ways to visually select an inner block...
https://stackoverflow.com/ques... 

Determining 32 vs 64 bit in C++

... static_assert(sizeof(void*) * CHAR_BIT == 32) is more expressive and technically correct (although I don't know any architecture where bytes have different amount of bits than 8) – Xeverous Mar 4 '19 at 14:27 ...
https://stackoverflow.com/ques... 

How do you use the Immediate Window in Visual Studio?

... { return (x + y);} void main(){ int a, b, c; a = 5; b = 7; c = Sum(a, b); char temp = getchar();} add breakpoint call commands https://msdn.microsoft.com/en-us/library/f177hahy.aspx share | ...
https://stackoverflow.com/ques... 

What is the effect of encoding an image in base64?

...e64 is the better choice. Size of base64-images Base64 uses 64 different characters and this is 2^6. So base64 stores 6bit per 8bit character. So the proportion is 6/8 from unconverted data to base64 data. This is no exact calculation, but a rough estimate. Example: An 48kb image needs around 64...