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How can I sort a List alphabetically?
I have a List<String> object that contains country names. How can I sort this list alphabetically?
13 Answers
...
How many GCC optimization levels are there?
...rst part of this function:
does integral_argument which calls atoi on the string corresponding to OPT_O to parse the input argument
stores the value inside opts->x_optimize where opts is a struct gcc_opts.
struct gcc_opts
After grepping in vain, we notice that this struct is also generated at ...
How to generate unique ID with node.js
...
The fastest possible way to create random 32-char string in Node is by using native crypto module:
const crypto = require("crypto");
const id = crypto.randomBytes(16).toString("hex");
console.log(id); // => f9b327e70bbcf42494ccb28b2d98e00e
...
General guidelines to avoid memory leaks in C++ [closed]
...e heap internally (note the double negation... :-) ...). For example, std::string implemented with Small String Optimization will have a buffer "on the stack of the class" for small strings (~15 chars), and will use a pointer to a memory in the heap for larger strings... But from the outside, std::s...
Running the new Intel emulator for Android
...e Accelerated Execution Manager. Download it with the SDK Manager, it's in Extras. After this, go to the folder
[Android SDK Root]\extras\intel\Hardware_Accelerated_Execution_Manager
then run IntelHaxm.exe and install.
Here the link of the Intel Hardware Accelerated
IntelHaxm.exe for
Microsoft Wi...
How do I return clean JSON from a WCF Service?
...erson>.
Eliminate the code that you use to serialize the List to a json string - WCF does this for you automatically.
Using your definition for the Person class, this code works for me:
public List<Person> GetPlayers()
{
List<Person> players = new List<Person>();
pla...
How to use Jackson to deserialise an array of objects
...
In response to my own comment above, first parse the json string to a jsonNode and then access the property of the array like this: JsonNode jsonNode = MAPPER.readTree(json); String arrayString = jsonNode.get("data").toString(); Then follow @Programmer Bruce's instructions above. Li...
Integrating the ZXing library directly into my Android application
... layout file
ImageView imageView = (ImageView) findViewById(R.id.qrCode);
String qrData = "Data I want to encode in QR code";
int qrCodeDimention = 500;
QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(qrData, null,
Contents.Type.TEXT, BarcodeFormat.QR_CODE.toString(), qrCodeDimention);
tr...
How to use null in switch
...l throw a NullPointerException when i is null.
* Since Java 7 you can use String in switch statements.
More about switch (including example with null variable) in Oracle Docs - Switch
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impr...
What is the list of valid @SuppressWarnings warning names in Java?
...witch statement (enum case)
nls to suppress warnings relative to non-nls string literals
null to suppress warnings relative to null analysis
restriction to suppress warnings relative to usage of discouraged or
forbidden references
serial to suppress warnings relative to missing serialVersi...