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std::string to char*
...ar *; you aren't allowed to change the C-style string returned by c_str(). If you want to process it you'll have to copy it first:
std::string str = "string";
char *cstr = new char[str.length() + 1];
strcpy(cstr, str.c_str());
// do stuff
delete [] cstr;
Or in modern C++:
std::vector<char>...
How to get the position of a character in Python?
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There are two string methods for this, find() and index(). The difference between the two is what happens when the search string isn't found. find() returns -1 and index() raises ValueError.
Using find()
>>> myString = 'Position of a character'
>>> myString.find('s')...
conversion from string to json object android
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what if the string is an array of JSON objects? Like "[{},{},{}]"
– Francisco Corrales Morales
Jun 17 '14 at 23:18
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Why does integer overflow on x86 with GCC cause an infinite loop?
...umes you won't cause undefined behavior, and optimizes away the loop test. If you really want wraparound, pass -fwrapv to g++ or gcc when compiling; this gives you well-defined (twos-complement) overflow semantics, but can hurt performance.
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Java - JPA - @Version annotation
...ENTITY SET ..., VERSION = VERSION + 1 WHERE ((ID = ?) AND (VERSION = ?))
If the WHERE clause fails to match a record (because the same entity has already been updated by another thread), then the persistence provider will throw an OptimisticLockException.
Does it mean that we should declare ou...
Should you choose the MONEY or DECIMAL(x,y) datatypes in SQL Server?
I'm curious as to whether or not there is a real difference between the money datatype and something like decimal(19,4) (which is what money uses internally, I believe).
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How do I close a single buffer (out of many) in Vim?
...: current
buffer) and delete it from
the buffer list. If the buffer was changed, this fails,
unless when [!] is specified, in which case changes are
lost.
The file remains unaffected.
If you know what you're doing, you can also use :bw
:b...
Returning from a finally block in Java
...you provided are reason enough to not use flow-control from finally.
Even if there's a contrived example where it's "better," consider the developer who has to maintain your code later and who might not be aware of the subtleties. That poor developer might even be you....
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How do I conditionally apply CSS styles in AngularJS?
...The user will check checkboxes to indicate which items should be deleted. If a checkbox is unchecked, that item should revert back to its normal look.
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How to copy a directory structure but only include certain files (using windows batch files)
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You don't mention if it has to be batch only, but if you can use ROBOCOPY, try this:
ROBOCOPY C:\Source C:\Destination data.zip info.txt /E
EDIT: Changed the /S parameter to /E to include empty folders.
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