大约有 25,000 项符合查询结果(耗时:0.0364秒) [XML]
Convert UNIX epoch to Date object
... @Shambho: Just do the reverse and see if you're in the same order of magnitude: print(as.numeric(Sys.time()))
– Dirk Eddelbuettel
Feb 3 '15 at 2:16
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How do you render primitives as wireframes in OpenGL?
...ly (1, 0, 0), (0, 1, 0) and (0, 0, 1) for the three triangle vertices (the order does not really matter, which makes packing into triangle strips potentially easier).
The obvious disadvantage of this approach is that it will eat some texture coordinates and you need to modify your vertex array. Cou...
How to pass an object from one activity to another on Android
...n you implement Parcelable you have to add a lot of code to the class, and order fields in a very specific manner; Serializable you don't. Ultimately, I think it comes down to how many objects you are passing and what you are trying to do.
– BlackHatSamurai
Aug...
git ignore all files of a certain type, except those in a specific subfolder
...somedir subdirectory from the question. I needed to use !spec/**/*.json in order to make sure the more_mocks.json was committed as well.
– Leith
Dec 1 '18 at 2:32
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How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
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Or if you want to install the whole ia32-lib instead, try the following order:
sudo -i
cd /etc/apt/sources.list.d
echo "deb http://old-releases.ubuntu.com/ubuntu/ raring main restricted universe multiverse" >ia32-libs-raring.list
apt-get update
apt-get install ia32-libs
PS: In this way, y...
Is Task.Result the same as .GetAwaiter.GetResult()?
...a lot in Xamarin, I end up having to use things like ContinueWith a lot in order to make it not deadlock the UI. Edit: I know this is old, but that doesn't alleviate my frustration finding answers that state this with no alternatives for situations where you can't just use await.
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Is there any performance gain in indexing a boolean field?
...we search against. Adding an index on our Boolean field sped up queries by orders of magnitude, it went from about 9+ seconds to a fraction of a second.
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Python: How to get stdout after running os.system? [duplicate]
...e a memory error for larger tasks. Reference for this problem here. So, in order to get the output of the os.system command I used this workaround:
import os
batcmd = 'dir'
result_code = os.system(batcmd + ' > output.txt')
if os.path.exists('output.txt'):
fp = open('output.txt', "r")
ou...
C++ templates that accept only certain types
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I suggest using Boost's static assert feature in concert with is_base_of from the Boost Type Traits library:
template<typename T>
class ObservableList {
BOOST_STATIC_ASSERT((is_base_of<List, T>::value)); //Yes, the double parentheses are needed, otherwise the comma will b...
Is there an alternative to string.Replace that is case-insensitive?
... Compare: Microsoft.VisualBasic.CompareMethod.Text);
In order to use this method, you have to add a Reference to the Microsoft.VisualBasic assemblly. This assembly is a standard part of the .Net runtime, it is not an extra download or marked as obsolete.
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