When you add 1 to a pointer, the result is the location of the next object in a sequence of objects of the pointed-to type (i.e., an array). If p points to an int object, then p + 1 will point to the next int in a sequence. If p points to a 5-element array … Read more
You can use encoding like ASCII to get a character per byte by using the System.Text.Encoding class. or try this System.Text.ASCIIEncoding.Unicode.GetByteCount(string); System.Text.ASCIIEncoding.ASCII.GetByteCount(string);
This actually sets two properties and is equivalent to: font-size: 100%; line-height: 120%; To quote the official documentation: The syntax of this property is based on a traditional typographical shorthand notation to set multiple properties related to fonts. As David M said in the comments, it mirrors the typesetting tradition of specifying typeface sizes as … Read more
Try declaring the unit of width: e1.style.width = “400px”; // width in PIXELS
According to the source code, the maximum size of a list is PY_SSIZE_T_MAX/sizeof(PyObject*). PY_SSIZE_T_MAX is defined in pyport.h to be ((size_t) -1)>>1 On a regular 32bit system, this is (4294967295 / 2) / 4 or 536870912. Therefore the maximum size of a python list on a 32 bit system is 536,870,912 elements. As long as … Read more
What you are saying in your post is absolutely correct. I’d say that every C developer comes to exactly the same discovery and to exactly the same conclusion when (if) they reach certain level of proficiency with C language. When the specifics of your application area call for an array of specific fixed size (array … Read more
For arrays and hashes size is an alias for length. They are synonyms and do exactly the same thing. count is more versatile – it can take an element or predicate and count only those items that match. > [1,2,3].count{|x| x > 2 } => 1 In the case where you don’t provide a parameter … Read more
As vyegorov mentioned, array_length will do the trick. Or if you know that the array is 1-dimensional (which is likely) and are running PostgreSQL 9.4 or higher, you can use cardinality: SELECT cardinality(id) FROM example;
From S. Prakash, found at the MySQL forum: SELECT table_schema “database name”, sum( data_length + index_length ) / 1024 / 1024 “database size in MB”, sum( data_free )/ 1024 / 1024 “free space in MB” FROM information_schema.TABLES GROUP BY table_schema; Or in a single line for easier copy-pasting: SELECT table_schema “database name”, sum( data_length + … Read more
Because every C++ data type must be addressable. How would you create a pointer to a single bit? You can’t. But you can create a pointer to a byte. So a boolean in C++ is typically byte-sized. (It may be larger as well. That’s up to the implementation. The main thing is that it must … Read more