C++ type traits to check if class has operator/member -

-

संभव डुप्लिकेट:

क्या किसी विशिष्ट टेम्प्लेट पैरामीटर में एक ऑपरेटर / फ़ंक्शन है, उदाहरण के लिए, यह बूस्ट प्रकार लक्षण या किसी अन्य तंत्र का उपयोग करना संभव है std :: vector एक टेम्पलेट पैरामीटर के रूप में ऑपरेटर [] है, जबकि std :: pair नहीं करता है।

आप इस प्रकार के गुणों के माध्यम से हल नहीं कर सकते क्योंकि आपको हर संभव नाम के लिए परिभाषित करना होगा।

सूचीबद्ध सामान्य समाधान हैं, जिनमें एक समस्या है, हालांकि: कई एसटीएल लागूकरण मूल कक्षाओं में सामान्य कोड डालते हैं और यह विधि इनहेरिट किए गए नामों की जांच नहीं करता है।

यदि आपको भी इनहेरिट की गई सदस्यों के लिए जांच की ज़रूरत है, तो देखें । जवाब एक समाधान प्रदान करता है जो जांचता है कि प्रश्न में वर्ग में उस नाम का सदस्य है और यह कॉन्स्ट-नेस और तर्क गणना के लिए भी जांच कर सकता है। यह हालांकि तर्क और वापसी के प्रकार और सदस्यों की दृश्यता सहित पूर्ण हस्ताक्षर के लिए जांच करने में विफल रहता है, कोई फर्क नहीं पड़ता। आपको लिंक का उपयोग करके आंशिक रूप से हल करने में सक्षम होना चाहिए (अब तक का समय नहीं देखा गया है)।


Comments

Post a Comment

Popular posts from this blog

asp.net - Change the driver in the connection string to a data source in VB.Net -

-
I have a code that has a driver in a connection string. as a slow string = "driver = {SQL Server}; server = xxx \ SQLEXPRESS; database = dbRegister; reliable connection = yes" I need to change it: data source = 1.2.3.4; User ID = xx; Password = xxxxx; Initial list = xxxxx; Connect timeout = 30 " When I change text, it returns this error: [microsoft] [ ODBC] Driver Manager] The name of the data source was not found and no default driver specified How do I declare a data source? myServerAddress; Initial Catalog = myDataBase; User id = myUsername; Password = myPassword; Use the server name \ example to connect to the specific SQL Server instance as the data source. Are you using SQL Server 2005 Express? Server name syntax does not remember Servername \ SQLEXPRESS Visit P>
Read more

objective c - iPhone and it's wireless area -

-
Is this a way to find other iPhones in the category of wireless areas? So I give an example. I'm staying at the airport somewhere I have an iPhone too. I and the other iPhone owners are playing the same game. Is there any way to warn me and the other player that we are close to each other? Does this work even if we are not on the same wireless network, or there is no wireless? And if there is any way to do this, can you give me some starting point? Like a link where I can learn something like this or maybe this is probably the name of this process, because I do not know how to search about this topic in Google. Thanks in advance! Can be completed with peer-to-peer discovery and connectivity you are describing Game Kit Framework Originally I thought it works only through Bluetooth, but after watching it immediately, it seems that WiFi is also supported. Hope it helps!
Read more

unix - Listing all shared memory segments used by a process on AIX5.3+ -

-
I would like to find all the shared memory segments used by a given process I am particularly interested in detecting shmid That's why I can use it in call (shmctl). On Solaris I will just read / proc / $ PID / map to find that information (field pr_shmid) The content of that file is defined by struct prmap_t in the sys / procfs format. Ax also has a / proc / $ PID / map file. Any project is a primate, but unfortunately it has been projected in pr_shmid field. Any ideas how can I get it on AIX5.3 +? I do not particularly know about AX, but I think that ipcs command is quite standard where SysV IPC is supported, so I want to get the ipcs -m command to give the appropriate code; If you can not find a better method, then there may be an option to parse its output.
Read more