Forex eurusd live chart dubai48 comments
Register with trading club to get all the basics of binary options andor forex its completely free p
If this string is not found when the archive is opened, It is presumed that this file is not a valid archive and this exception is thrown. Note that this is in no way related to version number of classes used by application programs.
This refers to the version of the serialization system used to create the archive. Future versions of this serialization system will be able to identify archives created under previous i. Hence, future enhancements to this serialization system should not obsolete any existing archive files. It is only necessary to increment this version number when the newer system creates archives incompatible in format with the current one.
Should it ever occur that an older program attempts to read newer archives whose format has changed, this exception is thrown. Suppose that a class has been assigned version number 3 and the program has been built and sent to third parties.
Now suppose that the definition of that class has been altered, the version number has been incremented to 4 and new archives have been built. If one attempts to load these new archives with the original program, this exception will be thrown. Upon loading back in the same sequence, we first create an new object and load in its data.
Then we load the data into another existing object. Where we started with one object during save, we have two objects after restore. In a more realistic situation, it could be very difficult to find this error. Fortunately, these situations can be detected when the archive is created. When this occurs, this exception is thrown. At the beginning of every archive, a signature is written indicating the type of archive.
This exception is thrown when an attempt is made to read an archive written in a different format. This should only occur when the size of an array in code is reduced after an archive has already been created. Aside from the common situations such as a corrupted or truncated input file, there are several less obvious ones that sometimes occur. This includes an attempt to read past the end of the file.
Text files need a terminating new line character at the end of the file which is appended when the archive destructor is invoked.
Be sure that an output archive on a stream is destroyed before opening an input archive on that same stream. That is, rather than using something like: In general, the behavior of the serialization library when passed uninitialized data is undefined. If it can be detected, it will invoke an assertion in debug builds.
Otherwise, depending on the type of archive, it may pass through without incident or it may result in an archive with unexpected data in it. This, in turn, can result in the throwing of this exception. Most likely cause is a corrupted archive or an attempt to insert virus via buffer overrun method.
Normally this collection is maintained without any explicit action on the part of the user of the library. However, there are special cases where this might have to be done explicitly and could be overlooked.
This is described in Runtime Casting. This might occur when serialization code is instantiated in both the mainline and one or more DLLS. If these become out of sync in any way, the XML may not map to the loading serialization and this exception might be thrown.
This might occur for one of the following reasons: The archive has been edited outside the serialization system. This might be possible if only the data is changed and not the XML attributes and nesting structure is left unaltered. But any other editing is likely to render the archive unreadable by the serialization library. The serialization has been altered and an archive generated by the old code is being read. That is, versioning has not been properly employed to properly deserialize previously created archives.
Valid characters for an XML tag are: Distributed under the Boost Software License, Version 1.