Checking for undefined-ness is not an accurate way of testing whether a key exists. What if the key exists but the value is actually undefined? Expand snippet You should instead use the in operator: Expand snippet If you want to check if a key doesn’t exist, remember to use parenthesis: Expand snippet Or, if you … Read more
The API reference for BufferedWriter and PrintWriter detail the differences. The main reason to use the PrintWriter is to get access to the printXXX methods like println(). You can essentially use a PrintWriter to write to a file just like you would use System.out to write to the console. A BufferedWriter is an efficient way … Read more
Does this help? The main point is that ++a increments the value and immediately returns it. a++ also increments the value (in the background) but returns unchanged value of the variable – what looks like it is executed later.
To run the functions in a DLL, first find out what those functions are using any PE (Portable Executable) analysis program (e.g. Dependency Walker). Then use RUNDLL32.EXE with this syntax: dllname is the path and name of your dll file, entrypoint is the function name, and optional arguments are the function arguments
A loose analogy is, “Meteor is to Node as Rails is to Ruby.” It’s a large, opinionated framework that uses Node on the server. Node itself is just a low-level framework providing functions for sending and receiving HTTP requests and performing other I/O. Meteor is radically ambitious: By default, every page it serves is actually … Read more
Look closely at what you’re trying to do in this code: You’re assigning a “long” value to each of l and m and then calling them in the average function as if they were references to a cell. I suggest that you add a range variable, assign the location of the data you want to … Read more
Make it the following: The above will target the specific links, which is what you want, versus styling the entire list blue, which is what you were initially doing. Here is a JsFiddle. The other way would be creating another class and implementing it like so: HTML CSS Also demonstrated in this JsFiddle
$(window).load(myfunc) is what you’re looking for. If you’re working with the load event of an iframe, you can replace window with the iframe element/selector.
In C99 the available basic integer types (the ones without _t) were deemed insufficient, because their actual sizes may vary across different systems. So, the C99 standard includes definitions of several new integer types to enhance the portability of programs. The new types are especially useful in embedded environments. All of the new types are … Read more
To plot 2D and 3D graphs in C I would recommend the library DISLIN. You can see examples here or there. The code is pretty easy to use and gives nice results.