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Loop through an array in JavaScript
...nue flow control statements
Cons
Too verbose
Imperative
Easy to have off-by-one errors (sometimes also called a fence post error)
2. Array.prototype.forEach
The ES5 specification introduced a lot of beneficial array methods, one of them, the Array.prototype.forEach and it gives us a concise way t...
How to sort a list of objects based on an attribute of the objects?
I've got a list of Python objects that I'd like to sort by an attribute of the objects themselves. The list looks like:
8 ...
Difference between this and self in JavaScript
...s the standard method for setting event listeners.
From Mozilla docs:
By using self, you can refer to the global scope in a way that will work not only in a window context (self will resolve to window.self) but also in a worker context (self will then resolve to WorkerGlobalScope.self).
...
To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...DBCP-322 which is closed as WONTFIX. You would rather like to replace DBCP by another connection pool which is doing its job better then DBCP. For example HikariCP, BoneCP, or perhaps Tomcat JDBC Pool.
share
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Is it secure to store passwords as environment variables (rather than as plain text) in config files
...lain text. Anyone that knows where to look, can access the data.
Security by Obfuscation. You store the data (plaintext) someplace tricky, like an environment variable, or in a file that is meant to look like a configuration file. An attacker will eventually figure out what's going on, or stumble...
Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
...sequence of implementation-defined places for a header identified uniquely by the specified sequence between the < and > delimiters, and causes the replacement of that directive by the entire contents of the header. How the places are specified or the header identified is implementation-define...
Memcache(d) vs. Varnish for speeding up 3 tier web architecture
...the database only has to write this comment. Nothing else needs to be done by the database to generate the page. All the comments are pulled by Memcache, and the page is recached until somebody affects it again (perhaps by voting my answer up). Again, the database writes the vote, all other data is ...
An error occurred while validating. HRESULT = '8000000A'
...om Visual Studio Setup projects (.vdproj).
We've worked around this issue by triggering the MSI build a second time when it fails a first time. Not nice, but it works most of the time (error rate is down from ~ 10% to ~ 1%).
...
What do the terms “CPU bound” and “I/O bound” mean?
...
CPU Bound means the rate at which process progresses is limited by the speed of the CPU. A task that performs calculations on a small set of numbers, for example multiplying small matrices, is likely to be CPU bound.
I/O Bound means the rate at which a process progresses is limited by th...
Read file line by line using ifstream in C++
...thods are:
Assume that every line consists of two numbers and read token by token:
int a, b;
while (infile >> a >> b)
{
// process pair (a,b)
}
Line-based parsing, using string streams:
#include <sstream>
#include <string>
std::string line;
while (std::getline(infil...