大约有 40,000 项符合查询结果（耗时：0.0750秒） [XML]
foreach with index [duplicate]
... 0;
foreach (var e in ie) action(e, i++);
}
And use it like so:
var strings = new List<string>();
strings.Each((str, n) =>
{
// hooray
});
Or to allow for break-like behaviour:
public static bool Each<T>(this IEnumerable<T> ie, Func<T, int, bool> action)
{
...
How can I have grep not print out 'No such file or directory' errors?
...ry creating 2 files in a dir, 'aaa.txt' and 'a b.txt', both containing the string 'some text'. The command /bin/ls -1 | xargs grep 'some text' will give you "no such file or directory" because it breaks up 'a b.txt' into 2 args. If you suppress, you won't notice you missed a file.
...
SQLite - How do you join tables from different databases?
...lQuery"></param>
public static DataTable GetDataTableFrom2DBFiles(string attachSQL, string sqlQuery)
{
try
{
string conArtistName = "data source=" + path + ";";
using (SQLiteConnection singleConnectionFor2DBFiles = new SQLiteConnection(conArtistName))
{
...
Set Page title using UI-Router
... $window.document.title = title;
}
});
Then just add a title string to your state:
$stateProvider.state({
name: "foo",
url: "/foo",
template: "<foo-widget layout='row'/>",
title: "Foo Page""
});
That will make the words "Foo Page" show up in the title. (If a st...
How to check if UILabel is truncated?
...
You can calculate the width of the string and see if the width is greater than label.bounds.size.width
NSString UIKit Additions has several methods for computing the size of the string with a specific font. However, if you have a minimumFontSize for your lab...
Why not be dependently typed?
...le technique is not the same. Suppose you have a function Vec Zy -> IO String. You can't use it with withZeroes, because the type Zy can't be unified with forall n. Maybe you can work around that for one or two special cases, but it quickly gets out of hand.
– John L
...
How do I get and set Environment variables in C#?
...s 'C:\Windows\system32'. To get the un-expanded path, I had to use this:
string keyName = @"SYSTEM\CurrentControlSet\Control\Session Manager\Environment\";
string existingPathFolderVariable = (string)Registry.LocalMachine.OpenSubKey(keyName).GetValue("PATH", "", RegistryValueOptions.DoNotExpandEnv...
One DbContext per web request… why?
...the DbContext caches data, it gets stale pretty soon. This will get you in all sorts of trouble when multiple users/applications work on that database simultaneously (which is very common of course). But I expect you already know that and just want to know why not to just inject a new instance (i.e....
Purpose of buildscript block in Gradle
...u can use everything that ships with Gradle out-of-the-box. If you additionally want to use third-party plugins, task classes, or other classes (in the build script!), you have to specify the corresponding dependencies in the buildScript block.
...
How do I access named capturing groups in a .NET Regex?
...
You specify the named capture group string by passing it to the indexer of the Groups property of a resulting Match object.
Here is a small example:
using System;
using System.Text.RegularExpressions;
class Program
{
static void Main()
{
Stri...