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p vs puts in Ruby
...ject, while puts does not. 1.9.3p125 :002 > (p "foo").class "foo" => String 1.9.3p125 :003 > (puts "foo").class foo => NilClass
– Darren Cheng
Nov 21 '12 at 22:15
2
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栈和队列的面试题Java实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... this.data = data;
}
}
public static void main(String[] args) {
Stack stack = new Stack();
stack.push(1);
stack.push(2);
stack.push(3);
System.out.println(stack.pop().data);
System.out.println(stack.pop().data);
...
How to get a list of current open windows/process with Java?
...pproach to parse the the process list from the command "ps -e":
try {
String line;
Process p = Runtime.getRuntime().exec("ps -e");
BufferedReader input =
new BufferedReader(new InputStreamReader(p.getInputStream()));
while ((line = input.readLine()) != null) {
Sy...
Android: upgrading DB version and adding new table
...ldVersion, int newVersion) {
switch (oldVersion) {
case 1:
String sql = "ALTER TABLE " + TABLE_SECRET + " ADD COLUMN " + "name_of_column_to_be_added" + " INTEGER";
db.execSQL(sql);
break;
case 2:
String sql = "SOME_QUERY";
db.execSQL(sql);
...
How can I get the length of text entered in a textbox using jQuery?
....val() gets the value of the input element entered by the user, which is a string.
.length gets the number of characters in the string.
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Show dialog from fragment?
...essage("Sure you wanna do this!")
.setNegativeButton(android.R.string.no, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// do nothing (will close dialog)
}
})
...
How do I join two paths in C#?
...
You have to use Path.Combine() as in the example below:
string basePath = @"c:\temp";
string filePath = "test.txt";
string combinedPath = Path.Combine(basePath, filePath);
// produces c:\temp\test.txt
sh...
How to get access to HTTP header information in Spring MVC REST controller?
...rInfo.do")
public void displayHeaderInfo(@RequestHeader("Accept-Encoding") String encoding,
@RequestHeader("Keep-Alive") long keepAlive) {
}
The Accept-Encoding and Keep-Alive header values are provided in the encoding and keepAlive parameters respectively.
And no ...
How to modify list entries during for loop?
...fy the list during an iterative looping. However, suppose I have a list of strings, and I want to strip the strings themselves. Does replacement of mutable values count as modification?
...
What is the garbage collector in Java?
...a typical Java application is running, it is creating new objects, such as Strings and Files, but after a certain time, those objects are not used anymore. For example, take a look at the following code:
for (File f : files) {
String s = f.getName();
}
In the above code, the String s is being...