大约有 30,000 项符合查询结果（耗时：0.0771秒） [XML]
What's the difference between Task.Start/Wait and Async/Await?
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Eric LippertEric Lippert
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Most efficient T-SQL way to pad a varchar on the left to a certain length?
... not very efficient in terms of execution time. The Tally table I used has 64,000 records. Kudos to Martin Smith for pointing out execution time efficiency.
SET STATISTICS TIME ON
select FORMAT(N, 'd10') as padWithZeros from Tally
SET STATISTICS TIME OFF
SQL Server Execution Times:
CPU time =...
Maximum packet size for a TCP connection
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The absolute limitation on TCP packet size is 64K (65535 bytes), but in practicality this is far larger than the size of any packet you will see, because the lower layers (e.g. ethernet) have lower packet sizes.
The MTU (Maximum Transmission Unit) for Ethernet, for inst...
How do I monitor the computer's CPU, memory, and disk usage in Java?
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Be careful when using Sigar, there are problems on x64 machines... stackoverflow.com/questions/23405832/… and it seems the library doesn't get updated since 2010
– Alvaro
May 1 '14 at 10:46
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libxml install error using pip
...talled **
From the lxml documentation, assuming you are running a Debian-based distribution :
sudo apt-get install libxml2-dev libxslt-dev python-dev
For Debian based systems, it should be enough to install the known build dependencies of python-lxml or python3-lxml, e.g.
sudo apt-get build-de...
Freeze the top row for an html table only (Fixed Table Header Scrolling) [duplicate]
...es are so cute in that different browsers will allocate pixels differently based on calculations and you simply CANNOT (AFAIK) guarantee that the distribution will be perfect in all cases. It becomes glaringly obvious if you have borders within your table.
I took a different approach and said screw...
How to get existing fragments when using FragmentPagerAdapter
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I have found answer on my question based on following post: reusing fragments in a fragmentpageradapter
Few things I have learned:
getItem(int position) in the FragmentPagerAdapter is rather misleading name of what this method actually does. It creates new ...
ADB not recognising Nexus 4 under Windows 7
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To fix/install Android USB driver on Windows 7/8 32bit/64bit:
Connect your Android-powered device to your computer's USB port.
Right-click on Computer from your desktop or Windows Explorer, and
select Manage.
Select Devices in the left pane.
Locate and expand Other device in th...
Using jQuery to replace one tag with another
...Inside the function, this refers to the currently processed code element.
DEMO
Update: There is no big performance difference, but in case the code elements have other HTML children, appending the children instead of serializing them feels to be more correct:
$('code').replaceWith(function(){
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Error installing libv8: ERROR: Failed to build gem native extension
... at /home/gitlab/gitlab/vendor/bundle/ruby/2.1.0/cache/libv8-3.16.14.3-x86_64-linux.gem. It may be corrupted. I remove the whole cache folder and re-run bundle install --full-index --deployment --without development test postgres aws. Works.
– Nick Dong
Mar 2 ...