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Manipulating an Access database from Java without ODBC

... UCanAccess is a pure Java JDBC driver that allows us to read from and write to Access databases without using ODBC. It uses two other packages, Jackcess and HSQLDB, to perform these tasks. The following is a brief overview of how to get it set up.   Option 1: Using...
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Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp?

...r various reasons. During compilation of your project, each .cpp file (usually) is compiled. In simple terms, this means the compiler will take your .cpp file, open any files #included by it, concatenate them all into one massive text file, and then perform syntax analysis and finally it will conv...
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How to prevent XSS with HTML/PHP?

... Basically you need to use the function htmlspecialchars() whenever you want to output something to the browser that came from the user input. The correct way to use this function is something like this: echo htmlspecialchars($st...
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Comment Inheritance for C# (actually any language)

... Automatically generated docs seem like a very bad idea to me. They don't add any useful information but only blow up the code unnecessarily. If a tool can understand what a method does from its name, than a person can also understand ...
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Writing a list to a file with Python

...ist: print >> f, item If you're keen on a single function call, at least remove the square brackets [], so that the strings to be printed get made one at a time (a genexp rather than a listcomp) -- no reason to take up all the memory required to materialize the whole list of strings....
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Java 8 Distinct by property

...ey(Person::getName)) Note that if the stream is ordered and is run in parallel, this will preserve an arbitrary element from among the duplicates, instead of the first one, as distinct() does. (This is essentially the same as my answer to this question: Java Lambda Stream Distinct() on arbitrary ...
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How to find a Java Memory Leak

... supposed to be able to find the root reference ( ref ) or whatever it is called. Basically, I can tell that there are several hundred megabytes of hash table entries ([java.util.HashMap$Entry or something like that), but maps are used all over the place... Is there some way to search for large maps...
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Solving a “communications link failure” with JDBC and MySQL [duplicate]

...hat have been mentioned in different web sites, but non of them worked. Finally I changed my code and found out what was the problem. I'll try to tell you about different approaches and sum them up here. While I was seeking the internet to find the solution for this error, I figured out that there ...
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How to disable GCC warnings for a few lines of code

...n GCC and Clang. Consider the following Makefile CPPFLAGS:=-std=c11 -W -Wall -pedantic -Werror .PHONY: all all: puts for building the following puts.c source code #include <stdio.h> int main(int argc, const char *argv[]) { while (*++argv) puts(*argv); return 0; } It will not c...
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How does #include work in C++? [duplicate]

... It is basically a header file that also includes every standard library and STL include file. The only purpose I can see for it would be for testing and education. Se e.g. GCC 4.8.0 /bits/stdc++.h source. Using it would include a lot ...