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Why do we always prefer using parameters in SQL statements?
...
command.Parameters.Add(salaryParam);
var results = command.ExecuteReader();
}
VB.NET
Dim sql As String = "SELECT empSalary from employee where salary = @salary"
Using connection As New SqlConnection("connectionString")
Using command As New SqlCommand(sql, connection)
Dim sala...
How to think in data stores instead of databases?
...Just layout your web page. Lay them all out. Now look at them. You're already 2/3 there.
If you forget the notion that database size matters and data shouldn't be duplicated then you're 3/4 there and you didn't even have to write any code! Let your views dictate your Models. You don't have t...
How to redirect output with subprocess in Python?
...me ask you then: What's the point of the subprocess library if os.system already gets the job done? I get the feeling I should've been using subprocess instead since it's a library dedicated to this task, although since I'm doing this just for myself I'll be fine using os.system this time.
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How to disable the warning 'define' is not defined using JSHint and RequireJS
...}
}
From the JSHint Docs - the false (the default) means the variable is read-only.
If you are defining globals only for a specific file, you can do this:
/*global describe, it, before, beforeEach, after, afterEach */
s...
Wireshark localhost traffic capture [closed]
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If you're using Windows it's not possible - read below. You can use the local address of your machine instead and then you'll be able to capture stuff. See CaptureSetup/Loopback.
Summary: you can capture on the
loopback interface on Linux, on
various BSDs inclu...
Should you ever use protected member variables?
...h-accessors:
lazily create a value on the fly when the property is being read. If you add a protected getter method, you can lazily create the value and pass it back.
know when the property been modified or deleted. This can introduce bugs when the superclass makes assumptions about the state of t...
What is the difference between URI, URL and URN? [duplicate]
What's the difference between an URI, URL and URN? I have read a lot of sites (even Wikipedia) but I don't understand it.
4...
Java NIO FileChannel versus FileOutputstream performance / usefulness
...e use nio FileChannel versus normal FileInputStream/FileOuputStream to read and write files to filesystem. I observed that on my machine both perform at the same level, also many times the FileChannel way is slower. Can I please know more details comparing these two methods. Here is the code I...
I get exception when using Thread.sleep(x) or wait()
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You have a lot of reading ahead of you. From compiler errors through exception handling, threading and thread interruptions. But this will do what you want:
try {
Thread.sleep(1000); //1000 milliseconds is one second.
} ca...