大约有 10,000 项符合查询结果（耗时：0.0231秒） [XML]
VB.NET equivalent to C# var keyword [duplicate]
...ithout a type.
Minimal working example:
Option Strict On ' Always a good idea
Option Infer On ' Required for type inference
Imports System
Module MainModule
Sub Main()
Dim i = 42
Dim s = "Hello"
Console.WriteLine("{0}, {1}", i.GetType(), s.GetType())
' Prints ...
Check if element exists in jQuery [duplicate]
...
I can't get this to work without including > 0. Any ideas why that might happen?
– KillahB
Aug 1 '17 at 6:03
...
How to check if an object is an array?
... blog, as posted in his comment below.
Check out this benchmark to get an idea which method performs better: http://jsben.ch/#/QgYAV
From @Bharath convert string to array using Es6 for the question asked:
const convertStringToArray = (object) => {
return (typeof object === 'string') ? Array...
Reducing Django Memory Usage. Low hanging fruit?
... in the latter.
The individual project's documentation should give you an idea of how to use these tools to analyze memory behavior of Python applications.
The following is a nice "war story" that also gives some helpful pointers:
Reducing the footprint of python applications
...
Authorize a non-admin developer in Xcode / Mac OS
...
+1 for mentioning DevToolsSecurity. I had no idea such a tool exists. I had the opposite problem, I wanted do disable it again and thanks to this tool I finally was able to :) Just replaced -enable with -disable and that works as expected!
– Mecki
...
How do I check if a directory exists? “is_dir”, “file_exists” or both?
...
Setting chmod 777 is never a good idea. 755 is sufficient for folders.
– Oldskool
Jun 11 '15 at 8:22
add a comment
...
Query for documents where array size is greater than 1
...
I had no idea you could embed javascript in the query, json can be cumbersome. Many of these queries are one time only entered by hand so optimization is not required. I'll use this trick often +1
– pferrel
...
Simulating group_concat MySQL function in Microsoft SQL Server 2005?
...
No REAL easy way to do this. Lots of ideas out there, though.
Best one I've found:
SELECT table_name, LEFT(column_names , LEN(column_names )-1) AS column_names
FROM information_schema.columns AS extern
CROSS APPLY
(
SELECT column_name + ','
FROM inform...
How do I convert a TimeSpan to a formatted string? [duplicate]
...gt; timespan.tostring("%d") + " " +timespan.tostring(@"hh\:mm:\ss"); . The idea is get the required strings separately and join them.
– prabhakaran
Aug 3 '12 at 8:51
22
...
Run a batch file with Windows task scheduler
...ches. Since the bat file, a backup operation, ends in 2-3 hours, I have no idea of its status.
– azzurroverde
Nov 10 '15 at 4:23
...