大约有 47,000 项符合查询结果（耗时：0.0661秒） [XML]
Coding Practices which enable the compiler/optimizer to make a faster program
...
Write to local variables and not output arguments! This can be a huge help for getting around aliasing slowdowns. For example, if your code looks like
void DoSomething(const Foo& foo1, const Foo* foo2, int numFoo, Foo& barOut)
{
for (int...
How do I tell CPAN to install all dependencies?
... automatic first-time CPAN configuration:
perl -MCPAN -e 'my $c = "CPAN::HandleConfig"; $c->load(doit => 1, autoconfig => 1); $c->edit(prerequisites_policy => "follow"); $c->edit(build_requires_install_policy => "yes"); $c->commit'
Or combine it with local::lib module for ...
Can't install via pip because of egg_info error
... egg ones.
If you find yourself having my issue above, download this file and then in powershell or command prompt, navigate to ez_setup’s directory and execute the command and this will run the file for you:
$ [sudo] python ez_setup.py
If you still need to install pip at this point, run:
$ ...
How to join two sets in one line without using “|”
Assume that S and T are assigned sets. Without using the join operator | , how can I find the union of the two sets? This, for example, finds the intersection:
...
Multiple INSERT statements vs. single INSERT with multiple VALUES
...
I thought I'd look into this a bit more though so set up a loop (script) and tried adjusting the number of VALUES clauses and recording the compile time.
I then divided the compile time by the number of rows to get the average compile time per clause. The results are below
Up until 250 VALUES ...
find filenames NOT ending in specific extensions on Unix?
...
Or without ( and the need to escape it:
find . -not -name "*.exe" -not -name "*.dll"
and to also exclude the listing of directories
find . -not -name "*.exe" -not -name "*.dll" -not -type d
or in positive logic ;-)
find . -not -nam...
How can I open the interactive matplotlib window in IPython notebook?
I am using IPython with --pylab=inline and would sometimes like to quickly switch to the interactive, zoomable matplotlib GUI for viewing plots (the one that pops up when you plot something in a terminal Python console). How could I do that? Preferably without leaving or restarting my notebook.
...
AngularJS ui-router login authentication
I am new to AngularJS, and I am a little confused of how I can use angular-"ui-router" in the following scenario:
10 Answer...
How can I connect to Android with ADB over TCP? [closed]
... USB. My development server is a Windows 7 64-bit VM running in Hyper-V , and so I cannot connect directly via USB in the guest or from the host.
...
How can I get enum possible values in a MySQL database?
...M $table WHERE Field = '$field'")[0]["Type"];
– Alessandro.Vegna
Aug 27 '14 at 9:14
to convert the Type Value into an ...