大约有 47,000 项符合查询结果(耗时:0.0706秒) [XML]
Removing Java 8 JDK from Mac
So I installed the beta of JDK 8 a while ago to look at some of the examples. I thought for sure by now, it's easy to change between versions.
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Ways to iterate over a list in Java
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So for lists of immutable types like Integer and String it would not be possible to change the contents using for-each or Iterator methods -- would have to manipulate the list object itself to replace to elements. Is that right?
– jacobq
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Replace None with NaN in pandas dataframe
...fillna or Series.fillna which will replace the Python object None, not the string 'None'.
import pandas as pd
import numpy as np
For dataframe:
df = df.fillna(value=np.nan)
For column or series:
df.mycol.fillna(value=np.nan, inplace=True)
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Receiving login prompt using integrated windows authentication
...pted for a login. I have set Windows Authentication to enabled in IIS with all other security types disabled and my application web.config file authentication/authorization is set up as:
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&& (AND) and || (OR) in IF statements
...uated. And this is very useful. For example, if you need to test whether a String is not null or empty, you can write:
if (str != null && !str.isEmpty()) {
doSomethingWith(str.charAt(0));
}
or, the other way around
if (str == null || str.isEmpty()) {
complainAboutUnusableString();
} ...
When is a Java method name too long? [closed]
...mple, boolean doesShorterNameExistThatEquallyConvaysTheBehaviorOfTheMethod(String s) should be refactored to boolean isTooLong(String s).
– z5h
Feb 9 '10 at 17:08
6
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When & why to use delegates? [duplicate]
... define a person
/// </summary>
public class Person {
public string Name { get; set; }
public int Age { get; set; }
}
class Program {
//Our delegate
public delegate bool FilterDelegate(Person p);
static void Main(string[] args) {
//Create 4 Person objects
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Moment js date time comparison
...os_Angeles.
If you want to parse a value as UTC, then use:
moment.utc(theStringToParse)
Or, if you want to parse a local value and convert it to UTC, then use:
moment(theStringToParse).utc()
Or perhaps you don't need it at all. Just because the input value is in UTC, doesn't mean you have to ...
Free FTP Library [closed]
...files on the FTP server:
public IEnumerable<FtpFileInfo> GetFiles(string server, string user, string password)
{
var credentials = new NetworkCredential(user, password);
var baseUri = new Uri("ftp://" + server + "/");
var files = new List<FtpFileInfo>();
...
Writing files in Node.js
...y flush the content; they don't have any buffering system.
If you write a string, it’s converted to a buffer, and then sent to the native layer and written to disk. When writing strings, they're not filling up any buffer. So, if you do:
write("a")
write("b")
write("c")
You're doing:
fs.writ...
