大约有 45,000 项符合查询结果（耗时：0.0571秒） [XML]
There is already an open DataReader associated with this Command which must be closed first
...
I have had this error so many times now... and every time I forget! The answer to the question is always to use ToList().
– Cheesus Toast
Jul 21 '15 at 19:24
...
How to compare strings in Bash
... true.
(
[ "$x" == "valid" ]
&&
echo "valid"
)
||
echo "invalid"
Now, when it is evaluated, the first is checked. If it is false, than the second operand of the logic and && after it is not relevant. The first is not true, so it can not be the first and the second be true, anyway.
...
How do I get the path of the assembly the code is in?
...
Did not know you could put static before public. Nice to know and i think i prefer for readability
– Valamas
Jul 3 '13 at 4:27
...
outline on only one border
...nset border into an HTML element, but just only on one side of it.
Until now, I've been using an image to do that (GIF/PNG) that I would then use as a background and stretch it (repeat-x) and position a little off from the top of my block.
Recently, I discovered the outline CSS property, which i...
Why is using the rails default_scope often recommend against?
...WHERE "posts"."published" = 't'
Well this is pretty much what we expect. Now lets try:
2.1.1 :004 > Post.new
=> #<Post id: nil, title: nil, published: true, created_at: nil, updated_at: nil>
And there we have the first big problem with default scope:
=> default_scope will aff...
Visual Studio 2012 - Intellisense sometimes disappearing / broken
My colleagues and I are using VS2012 for some weeks now. Sometimes after working several hours the intellisense is broken. After closing all open tabs it works again.
...
How to save and load cookies using Python + Selenium WebDriver
...ns that check for human interaction, I do this and then the cookies I need now every-time I start the Webdriver with that folder everything is in there. You can also manually install the Extensions and have them in every session.
Secon time I run, all the cookies are there:
chrome_options = Options...
What is a 'semantic predicate' in ANTLR?
... instead of a parser rule) that will match numbers in the range of 0..999. Now in the parser, you'd like to make a distinction between low- and hight numbers (low: 0..500, high: 501..999). This could be done using a disambiguating semantic predicate where you inspect the token next in the stream (in...
Finish an activity from another activity
...ect like this,
public static Activity fa;
onCreate()
{
fa = this;
}
now use that object in another Activity to finish first-activity like this,
onCreate()
{
FirstActivity.fa.finish();
}
SECOND WAY
While calling your activity FirstActivity which you want to finish as soon as you move o...
Android Studio - How to Change Android SDK Path
...path was saved successfully. Again under Platform Settings, click on SDKs. Now in the middle column I can see all the sdks installed on the new path
– gian1200
Nov 2 '13 at 18:23
2...