大约有 16,000 项符合查询结果（耗时：0.0263秒） [XML]
When do I use fabs and when is it sufficient to use std::abs?
...bs; it's overloaded for all the numerical types.
In C, abs only works on integers, and you need fabs for floating point values. These are available in C++ (along with all of the C library), but there's no need to use them.
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How to concatenate strings in twig
...lde (~), like Alessandro said, and here it is in the documentation:
~: Converts all operands into strings and concatenates them. {{ "Hello
" ~ name ~ "!" }} would return (assuming name is 'John') Hello John!. – http://twig.sensiolabs.org/doc/templates.html#other-operators
And here is an e...
Amazon Interview Question: Design an OO parking lot [closed]
... to be either a Handicapped, Regular or Compact. ParkingSpace should be an interface rather.
– name_masked
Dec 11 '10 at 18:22
11
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Unable to find valid certification path to requested target - error even after cert imported
...ed with ssl:
record enable per-record tracing
handshake print each handshake message
keygen print key generation data
session print session activity
defaultctx print default SSL initialization
sslctx print SSLContext tracing
sessioncache print ...
Why do most fields (class members) in Android tutorial start with `m`?
... letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
14 Answers
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What is the Swift equivalent of -[NSObject description]?
...ring {
return "<\(type(of: self)): foo = \(foo)>"
}
}
print(MyClass()) // prints: <MyClass: foo = 42>
Note: type(of: self) gets the type of the current instances instead of explicitly writing ‘MyClass’.
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Clear Application's Data Programmatically
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There's a new API introduced in API 19 (KitKat):
ActivityManager.clearApplicationUserData().
I highly recommend using it in new applications:
import android.os.Build.*;
if (VERSION_CODES.KITKAT <= VERSION.SDK_INT) {
((ActivityManager)...
What's the difference between a file descriptor and file pointer?
I want to know the difference between a file descriptor and file pointer.
9 Answers
9
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How to check if UILabel is truncated?
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Ah, thanks for pointing that out, I've corrected the sample code.
– progrmr
Jun 23 '10 at 3:53
16
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Google fonts URL break HTML5 Validation on w3.org
...e.g. &amp etc). The user agent is then expected to follow RFC 3987 and convert the IRI to percent encoded UTF-8 before submitting it over HTTP (tools.ietf.org/html/rfc3987).
– Mikko Rantalainen
Oct 23 '17 at 6:30
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