大约有 38,000 项符合查询结果（耗时：0.0775秒） [XML]
Display the current time and date in an Android application
...that should display it
textView.setText(currentDateTimeString);
There is more to read in the documentation that can easily be found here
. There you'll find more information on how to change the format used for conversion.
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Initializing a static std::map in C++
... that it often has several new library dependencies, which generally means MORE packages that need to be installed to work correctly. We already need libstdc++. For example, the Boost ASIO library, requires at least 2 new libraries(probably more) that need to be installed. C++11/14 does make it a...
Check if string matches pattern
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From the docs on re.match: If zero or more characters at the beginning of string match the regular expression pattern. I just spent like 30 minutes trying to understand why I couldn't match something at the end of a string. Seems like it's not possible with match...
How to get users to read error messages?
...ral error message and to include a checkbox indicating 'Do you wish to see more of these error messages in the future?', the last thing an end-user wants, is to be working in the middle of the software to be bombarded with popup messages, they will get frustrated and will be turned off by the applic...
Best way to serialize an NSData into a hexadeximal string
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Nice, but two suggestions: (1) I think appendFormat is more efficient for large data since it avoids creating an intermediate NSString and (2) %x represents an unsigned int rather than unsigned long, although the difference is harmless.
– svachalek
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How do I tokenize a string in C++?
... std::string::npos, and extract the contents using std::string::substr.
A more fluid (and idiomatic, but basic) version for splitting on whitespace would use a std::istringstream:
auto iss = std::istringstream{"The quick brown fox"};
auto str = std::string{};
while (iss >> str) {
proces...
Best way to split string into lines
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Test if characters are in a string
...unction
grepl(value, chars, fixed = TRUE)
# TRUE
Use ?grepl to find out more.
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Parsing query strings on Android
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Since Android M things have got more complicated. The answer of android.net.URI.getQueryParameter() has a bug which breaks spaces before JellyBean.
Apache URLEncodedUtils.parse() worked, but was deprecated in L, and removed in M.
So the best answer now is...
Structs in Javascript
...maintain (should you want to add a new field in the future), and also much more code (retyping "id", "speaker", "country" every time)?
– nickf
Feb 2 '09 at 6:53
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