大约有 46,000 项符合查询结果(耗时:0.0644秒) [XML]

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Why isn't sizeof for a struct equal to the sum of sizeof of each member?

...s an example using typical settings for an x86 processor (all used 32 and 64 bit modes): struct X { short s; /* 2 bytes */ /* 2 padding bytes */ int i; /* 4 bytes */ char c; /* 1 byte */ /* 3 padding bytes */ }; struct Y { int i; /* 4 bytes */ cha...
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Objective-C : BOOL vs bool

... From the definition in objc.h: #if (TARGET_OS_IPHONE && __LP64__) || TARGET_OS_WATCH typedef bool BOOL; #else typedef signed char BOOL; // BOOL is explicitly signed so @encode(BOOL) == "c" rather than "C" // even if -funsigned-char is used. #endif #define YES ((BOOL)1) #define NO ...
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Dynamically generating a QR code with PHP [closed]

... 4 Are there any limitations for using the Google API?. I mean limitations as: amount of requests in a given time, etc. –...
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What's the difference between HEAD, working tree and index, in Git?

...'s the workflow order, basically showing arrows as 1 -> 2 -> 3 -> 4 where 1 is the first commit and 4 is the last) Now we know what is happening in the project. But to know what is happening right here, right now there is a special reference called HEAD. It serves two major purposes: it...
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How do I see the extensions loaded by PHP?

... 245 Running php -m will give you all the modules, and php -i will give you a lot more detailed info...
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Using grep to search for a string that has a dot in it

I am trying to search for a string 0.49 (with dot) using the command 9 Answers 9 ...
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Set selected index of an Android RadioGroup

.... – Lassi Kinnunen Mar 13 '15 at 8:14 @LassiKinnunen I feel like the number of upvotes on this answer suggests that pe...
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How can I String.Format a TimeSpan object with a custom format in .NET?

... Please note: this answer is for .Net 4.0 and above. If you want to format a TimeSpan in .Net 3.5 or below please see JohannesH's answer. Custom TimeSpan format strings were introduced in .Net 4.0. You can find a full reference of available format specifiers a...
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How To Set Text In An EditText

... answered Jan 4 '11 at 14:40 Kevin CoppockKevin Coppock 125k4242 gold badges247247 silver badges262262 bronze badges ...
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How to determine if Javascript array contains an object with an attribute that equals a given value?

... 24 Answers 24 Active ...