大约有 7,100 项符合查询结果（耗时：0.0154秒） [XML]
How does Access-Control-Allow-Origin header work?
...quest headers
Host DomainB.com
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8,application/json
Accept-Language en-us;
Accept-Encoding gzip, deflate
Keep-Alive 115
Origin http://DomainA.com
D...
How do I find where an exception was thrown in C++?
...uc_mcontext.eip is probably very platform dependent (e.g., use ...rip on a 64-bit platform). 3) Compile with -rdynamic so you get backtrace symbols. 4) Run ./a.out 2>&1 | c++filt to get pretty backtrace symbols.
– Dan
Mar 15 '10 at 19:05
...
Printing 1 to 1000 without loop or conditionals
...5\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n1...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
...mplements parts of the CLR spec that even Microsoft does not support (like 64 bit arrays). One of the most exciting new pieces of technology in the .NET world is Rosylyn. Mono has offered the C# compiler as a service for many years. Some of what Rosylyn offers is available via NRefractory as well. A...
Absolute vs relative URLs
...
PeeHaaPeeHaa
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Redis strings vs Redis hashes to represent JSON: efficiency?
...ct code
redis = Redis.include(MeRedis).configure( hash_max_ziplist_value: 64, hash_max_ziplist_entries: 512 ).new
=> #<Redis client v4.0.1 for redis://127.0.0.1:6379/0>
> redis.flushdb
=> "OK"
> ap redis.info(:memory)
{
"used_memory" => "529512",
...
What is the most robust way to force a UIView to redraw?
...
Werner AltewischerWerner Altewischer
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What characters are allowed in an email address?
...
The format of e-mail address is: local-part@domain-part (max. 64@255 characters, no more 256 in total).
The local-part and domain-part could have different set of permitted characters, but that's not all, as there are more rules to it.
In general, the local part can have these ASCII c...
Heap vs Binary Search Tree (BST)
...e we insert top bottom?
Benchmarked with this Buildroot setup on an aarch64 HPI CPU.
BST cannot be efficiently implemented on an array
Heap operations only need to bubble up or down a single tree branch, so O(log(n)) worst case swaps, O(1) average.
Keeping a BST balanced requires tree rotations...
Performance optimization strategies of last resort [closed]
...eal Even on modern x86 hardware, imul can stall the pipeline; see "Intel® 64 and IA-32 Architectures Optimization Reference Manual" §13.3.2.3: "Integer multiply instruction takes several cycles to execute. They are pipelined such that an integer multiply instruction and another long-latency instru...