大约有 38,000 项符合查询结果（耗时：0.0405秒） [XML]
How to pipe stdout while keeping it on screen ? (and not to a output file)
...l procedures that wish to be sure of
writing messages to or reading data from the terminal no matter how
output has been redirected. It can also be used for applications that
demand the name of a file for output, when typed output is desired and
it is tiresome to find out what terminal is cu...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...l compilers are brave enough to do that. It often draws a lot of criticism from the "C is just a higher-level assembly language" crowd. (Remember what happened when GCC introduced optimizations based on strict-aliasing semantics?)
Historically, GCC has shown itself as a compiler that has what it ta...
How to get file creation & modification date/times in Python?
...nel offers no way of accessing them; in particular, the structs it returns from stat() calls in C, as of the latest kernel version, don't contain any creation date fields. You can also see that the identifier st_crtime doesn't currently feature anywhere in the Python source. At least if you're on ex...
Create RegExps on the fly using string variables
... have to convert the string into a global (/.../g) RegExp. You can do this from a string using the new RegExp constructor:
new RegExp(string_to_replace, 'g')
The problem with this is that any regex-special characters in the string literal will behave in their special ways instead of being normal ...
How do I write a short literal in C++?
...the writers of the C99 standard got caught out by this. This is a snippet from Danny Smith's public domain stdint.h implementation:
/* 7.18.4.1 Macros for minimum-width integer constants
Accoding to Douglas Gwyn <gwyn@arl.mil>:
"This spec was changed in ISO/IEC 9899:1999 TC1; in IS...
JavaScript regex multiline flag doesn't work
I wrote a regex to fetch string from HTML, but it seems the multiline flag doesn't work.
5 Answers
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Can an enum class be converted to the underlying type?
...ic_cast. I use the following helper functions in my code to convert to and from an enum type and its underlying class.
template<typename EnumType>
constexpr inline decltype(auto) getIntegralEnumValue(EnumType enumValue)
{
static_assert(std::is_enum<EnumType>::value,"...
Convert Go map to json
...at's wrong, but you ignored it because you didn't check the error returned from json.Marshal.
json: unsupported type: map[int]main.Foo
JSON spec doesn't support anything except strings for object keys, while javascript won't be fussy about it, it's still illegal.
You have two options:
1 Use map[...
Where to define custom error types in Ruby and/or Rails?
...you might have to also include the exception file. See this example, again from httparty: github.com/jnunemaker/httparty/blob/…
– Jason Swett
Apr 15 '14 at 20:05
37
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Angularjs $q.all
...
@Zerkotin you can throw from a .then in order to both handle it later and expose it to $exceptionHandler, which should save you that trouble and a global.
– Benjamin Gruenbaum
Aug 7 '14 at 6:16
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