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multiple prints on the same line in Python
... can use the print statement to do this without importing sys.
def install_xxx():
print "Installing XXX... ",
install_xxx()
print "[DONE]"
The comma on the end of the print line prevents print from issuing a new line (you should note that there will be an extra space at the end of the ou...
MVC 3: How to render a view without its layout page when loaded via ajax?
....cshtml:
@{
Layout = Request.IsAjaxRequest() ? null : "~/Views/Shared/_Layout.cshtml";
}
and in the controller:
public ActionResult Index()
{
return View();
}
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What is the maximum value for an int32?
...
Simply use: Integer.MAX_VALUE in Java.
– Tim
Apr 5 '16 at 13:31
...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
...oc().
0xBAADF00D Bad Food Memory allocated by LocalAlloc() with LMEM_FIXED,but
not yet written to.
0xFEEEFEEE OS fill heap memory, which was marked for usage,
but wasn't allocated by HeapAlloc() or LocalAlloc().
...
os.walk without digging into directories below
...
Use the walklevel function.
import os
def walklevel(some_dir, level=1):
some_dir = some_dir.rstrip(os.path.sep)
assert os.path.isdir(some_dir)
num_sep = some_dir.count(os.path.sep)
for root, dirs, files in os.walk(some_dir):
yield root, dirs, files
...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...ensed to do so by the user (e.g. via -ffast-math).
Note that GCC provides __builtin_powi(x,n) as an alternative to pow( ), which should generate an inline multiplication tree. Use that if you want to trade off accuracy for performance, but do not want to enable fast-math.
...
Is gcc std::unordered_map implementation slow? If so - why?
...t, how much slower our concurrent hash map is compared with std::unordered_map .
3 Answers
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Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...JDK压缩包。
一般解压到/user/local/下，形成/usr/local/jdk1.7.0_79/bin这种目录结构。
配置JAVA_HOME环境变量：echo 'export JAVA_HOME=/usr/local/jdk1.7.0_79' >> ~/.bashrc。
3.2 安装Logstash
去官网下载Logstash的压缩包。
一般也解压到/usr/local/下，形成...
How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
...ndex 2 because index 0 and 1 are reserved for hidden arguments "self" and "_cmd".
– Vishal Singh
May 15 '13 at 6:20
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Is there a way to use SVG as content in a pseudo element :before or :after
...
<div class="author_">Lord Byron</div>
.author_ { font-family: 'Playfair Display', serif; font-size: 1.25em; font-weight: 700;letter-spacing: 0.25em; font-style: italic;
position:relative;
margin-top: -0.5em;
color: bla...