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How do I get a list of column names from a psycopg2 cursor?
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convert string array to string
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string[] test = new string[2];
test[0] = "Hello ";
test[1] = "World!";
string.Join("", test);
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What does “Document-oriented” vs. Key-Value mean when talking about MongoDB vs Cassandra?
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answered Jun 19 '10 at 18:42
Pascal ThiventPascal Thivent
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Why are C# 4 optional parameters defined on interface not enforced on implementing class?
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UPDATE: This question was the subject of my blog on May 12th 2011. Thanks for the great question!
Suppose you have an interface as you describe, and a hundred classes that implement it. Then you decide to make one of the parameters of one of the interface's methods optional. Are you su...
How to change shape color dynamically?
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300
You could modify it simply like this
GradientDrawable bgShape = (GradientDrawable)btn.getBackg...
Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...PidFileName, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
if (fd > 0) {
fchmod(fd, S_IRUSR|S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
//printf("chmod return code is %d\n", retCode);
} else {
fd = open(kPidFileName, O_RDWR | O_TRUNC);
}
}
if (fd < 0) {
printf("...
How does lucene index documents?
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There's a fairly good article here: https://web.archive.org/web/20130904073403/http://www.ibm.com/developerworks/library/wa-lucene/
Edit 12/2014: Updated to an archived version due to the original being deleted, probably the best more recent alternative is http://lucene.apache.org/core/3_...
How can I check in a Bash script if my local Git repository has changes?
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205
What you're doing will almost work: you should quote $CHANGED in case it's empty, and -z tests ...
Do you have to put Task.Run in a method to make it async?
... not.
– Stephen Cleary
Sep 5 '14 at 0:50
3
Actually, a async void method signature will compile, ...
How do HTML parses work if they're not using regexp?
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answered Mar 8 '10 at 10:45
QuentinQuentin
755k9292 gold badges10161016 silver badges11551155 bronze badges
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