大约有 40,000 项符合查询结果(耗时:0.0456秒) [XML]
How do I get the current time zone of MySQL?
...e to the system's timezone, which is less than helpful. Since you're using PHP, if the answer from MySQL is SYSTEM, you can then ask the system what timezone it's using via date_default_timezone_get. (Of course, as VolkerK pointed out, PHP may be running on a different server, but as assumptions go,...
How to get the second column from command output?
...
Or use sed & regex.
<some_command> | sed 's/^.* \(".*"$\)/\1/'
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How do I alias commands in git?
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This answer is a perfect example of why I suggest using a .gitconfig include in my answer! stackoverflow.com/a/59896430/117471
– Bruno Bronosky
Jan 24 at 12:31
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Check if a JavaScript string is a URL
...ddress
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*'+ // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?'+ // query string
'(\\#[-a-z\\d_]*)?$','i'); // fragment locator
return !!pattern.test(str);
}
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Is it a good practice to use try-except-else in Python?
...o, the use of exceptions in Python does not slow the surrounding code and calling code as it does in some compiled languages (i.e. CPython already implements code for exception checking at every step, regardless of whether you actually use exceptions or not).
In other words, your understanding that...
Python Create unix timestamp five minutes in the future
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Now in Python >= 3.3 you can just call the timestamp() method to get the timestamp as a float.
import datetime
current_time = datetime.datetime.now(datetime.timezone.utc)
unix_timestamp = current_time.timestamp() # works if Python >= 3.3
unix_timestamp_pl...
How do I read an entire file into a std::string in C++?
...am, and then convert that to std::string:
std::string slurp(std::ifstream& in) {
std::ostringstream sstr;
sstr << in.rdbuf();
return sstr.str();
}
This is nicely concise. However, as noted in the question this performs a redundant copy and unfortunately there is fundamentall...
selecting unique values from a column
...licates
BTW: using explicit column names in SELECT uses less resources in PHP when you're getting a large result from MySQL
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How to set the prototype of a JavaScript object that has already been instantiated?
...eded, because Object.create will only produce Objects, not functions for example, nor Symbols, Regexes, DOM elements or other host objects. If you want your objects to be callable, or special in other ways, but still change their prototype chain, you are stuck without settable __proto__ or Proxies
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MaxJsonLength exception in ASP.NET MVC during JavaScriptSerializer
...lues("aspnet:MaxJsonDeserializerMembers");
if (values != null && values.Length != 0 && int.TryParse(values[0], out num))
{
return num;
}
}
return 1000;
}
private static int GetMaxJsonLength()
{
i...
