大约有 11,700 项符合查询结果（耗时：0.0362秒） [XML]
How do I clear only a few specific objects from the workspace?
...rrent set of user-defined variables AND to clear loaded packages, devices, etc. The reproducibility of your work will increase markedly by adopting this habit.
See this excellent thread on Rstudio community for (h/t @kierisi) for a more thorough discussion (the main gist is captured by what I've st...
How set the android:gravity to TextView from Java side in Android
...not clearly stating where I get the gravity constants from (Gravity.CENTER etc).
– Hein du Plessis
Oct 9 '12 at 5:41
1
...
Delete files older than 15 days using PowerShell
...ases as the OP is new to PowerShell and may not understand what gci, ?, %, etc. are.
$limit = (Get-Date).AddDays(-15)
$path = "C:\Some\Path"
# Delete files older than the $limit.
Get-ChildItem -Path $path -Recurse -Force | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $limit } | Remove...
How can I get the iOS 7 default blue color programmatically?
...tint for several elements, including the system button, segmented control, etc. They've made it easy to select the color using IB, as seen here:
...
not:first-child selector
...on't match even the 1st ul if it's preceded by another element (p, heading etc.). On the contrary, ul:not(:first-of-type) means "any ul element except the 1st ul in the container". You are right that OP probably needed the latter behavior, but your explanation is rather misleading.
...
Escaping ampersand in URL
...to encode the body and subject parameters to keep line breaks, ampersands, etc. intact.
When a character from the reserved set (a "reserved character") has
special meaning (a "reserved purpose") in a certain context, and a URI
scheme says that it is necessary to use that character for some o...
CSS: Animation vs. Transition
...raight on point:
Transition:
Needs a triggering element (:hover, :focus etc.)
Only 2 animation states (start and end)
Used for simpler animations (buttons, dropdown menus and so on)
Easier to create but not so many animation/effect possibilities
Animation @keyframes:
It can be used for endles...
Getting file names without extensions
...embellished to provide directory names or other criteria for modification, etc:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
namespace DocumentDistributor.Library
{
public static class myExtensions
{
public static string[] G...
MySQL query to get column names?
...lumn type, whether the column is nullable, max column size, character set, etc)...
Oh, and it's standard SQL (Whereas SHOW ... is a MySQL specific extension)...
For more information about the difference between SHOW... and using the INFORMATION_SCHEMA tables, check out the MySQL Documentation on I...
How to hide columns in HTML table?
...
@Anuraj it should be noted that :first-child etc. are supported > IE 11 and Edge, good one anyway
– Vitaliy Terziev
Jul 26 '17 at 9:41
add a c...