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Using git repository as a database backend
... database triggering the version control procedures ( hint : assuming Mysql, use of triggers and sys_exec() blah blah ...) .In terms of implementation complexity, it will range from the simple and effective ( eg scripting ) to the complex and wonderful ( some programmed connector inter...
In Java, what does NaN mean?
...ample,
0.0 divided by 0.0 is arithmetically undefined. Taking the square root of a
negative number is also undefined.
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Could not load file or assembly … The parameter is incorrect
...e:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/root/3c8629f7/dfa387b6/Avanade.ViddlerNet.DLL.**
LOG: Attempting download of new URL **file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files/root/3c8629f7/dfa387b6/Avanade.ViddlerNet/Avanade.ViddlerNet...
Error “gnu/stubs-32.h: No such file or directory” while compiling Nachos source code
...d passing --disable-multilib, but it doesn't change anything. I don't have root access to install the multilib package.
– user632657
Feb 25 '14 at 16:09
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...
server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
...-P /usr/local/share/ca-certificates/cacert.org http://www.cacert.org/certs/root.crt http://www.cacert.org/certs/class3.crt
sudo update-ca-certificates
git config --global http.sslCAinfo /etc/ssl/certs/ca-certificates.crt
sh...
How to see the values of a table variable at debug time in T-SQL?
...
You can add ",ROOT('rootNodeName')" to the "FOR XML" clause. This will collect multiple rows (if any) under a single root, which makes for a legal XML document, which can be viewed with the XML visualizer instead of the text visualizer.
...
Making 'git log' ignore changes for certain paths
...foo > aye/foo
$ git add aye/foo
$ git commit -m "First commit"
[master (root-commit) 46a028c] First commit
0 files changed
create mode 100644 aye/foo
$ echo foo > bee/foo
$ git add bee/foo
$ git commit -m "Second commit"
[master 30b3af2] Second commit
1 file changed, 1 insertion(+)
create ...
How to use XPath in Python?
...retty weak, but in 2.7+ much improved:
import xml.etree.ElementTree as ET
root = ET.parse(filename)
result = ''
for elem in root.findall('.//child/grandchild'):
# How to make decisions based on attributes even in 2.6:
if elem.attrib.get('name') == 'foo':
result = elem.text
...
内存调试技巧：C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术
...，需要特别关注 C 和 C++ 编程的内存问题。让我们看一看如何解决这些问题，先不谈是哪种语言。
内存错误的类别
首先，不要失去信心。有很多办法可以对付内存问题。我们先列出所有可能存在的实际问题：
内存泄漏
错误...
Error:(1, 0) Plugin with id 'com.android.application' not found
...
Root-gradle file:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:x.x.x'
}
}
allprojects {
repositories {
jcenter()
}
}
Gra...