大约有 40,000 项符合查询结果（耗时：0.0680秒） [XML]
Format Float to n decimal places
...
You may also pass the float value, and use:
String.format("%.2f", floatValue);
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Adding up BigDecimals using Streams
...mport java.util.LinkedList;
public class Demo
{
public static void main(String[] args)
{
LinkedList<Invoice> invoices = new LinkedList<>();
invoices.add(new Invoice("C1", "I-001", BigDecimal.valueOf(.1), BigDecimal.valueOf(10)));
invoices.add(new Invoice("C2", "I-002", B...
How should I choose an authentication library for CodeIgniter? [closed]
...ggests grc.com for salts (not bad for a PRNG)
Banning with stored 'reason' strings
Simple yet effective error handling
Cons
Only lets users 'reset' a lost password (rather than letting them pick a new one upon reactivation)
Homebrew pseudo-event model - good intention, but misses the mark
Two pass...
C# Ignore certificate errors?
... return true; //Is valid
}
if (cert.GetCertHashString() == "99E92D8447AEF30483B1D7527812C9B7B3A915A7")
{
return true;
}
return false;
};
using (var httpClient = new HttpClient(httpClientHandler))
{
var httpResponse =...
Get Maven artifact version at runtime
...perties, falling back to getting it from the manifest
public synchronized String getVersion() {
String version = null;
// try to load from maven properties first
try {
Properties p = new Properties();
InputStream is = getClass().getResourceAsStream("/META-INF/maven/com....
How can I get the line number which threw exception?
...
Simple way, use the Exception.ToString() function, it will return the line after the exception description.
You can also check the program debug database as it contains debug info/logs about the whole application.
...
Questions every good .NET developer should be able to answer? [closed]
...otected internal"?
How do short-circuited operators work?
Explain what the StringBuilder class is and why you'd want to use it?
What's the difference between a static method and a non-static method?
What does the "volatile" keyword in C# mean?
Explain what happens when you pass a "ref" or "out" para...
Unable to add window — token android.os.BinderProxy is not valid; is your activity running?
...show our dialog box or ui change.
@Override
protected void onPostExecute(String response_str) {
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
if (!((Activity) mContext).isFinishing()) {
try...
How to translate between Windows and IANA time zones?
...uget.
Using this library is simple. Here are some examples of conversion:
string tz = TZConvert.IanaToWindows("America/New_York");
// Result: "Eastern Standard Time"
string tz = TZConvert.WindowsToIana("Eastern Standard Time");
// result: "America/New_York"
string tz = TZConvert.WindowsToIana("...
Pass a PHP array to a JavaScript function [duplicate]
...y); ?>, ...)
In cases where you need to parse out an object from JSON-string (like in an AJAX request), the safe way is to use JSON.parse(..) like the below:
var s = "<JSON-String>";
var obj = JSON.parse(s);
sha...