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    Today i was update my android sdk to new android adk-17 . i am facing some problems in this, that is unable to show AddMob in my app, if ... .system.PathClassLoader[/data/app/com.veritra.iflipout-1.apk] See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    We have a n-tier (.net) web application where we have a Web tier -> App tier -> Database. Everything worked fine until we went for ... Processor Type 64 Bit Softwares Installed Microsoft SQL Sever 2014 See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    In case I am running a below hive query on table with certain partitioned column, I want to make sure hive does not do full table scan and just ... very well figure out the value from metadata itself. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am writing a function where multiple ifelse are being used for data table operation. Although I am using data tables for speed but multiple ifelse making my code ... ifelse(is.na(x)|!nzchar(x),1,0)] See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Consider the following x86-64 assembly: inner: ... ret outer: .top: call inner dec rdi jnz .top ret The function outer simply repeatedly makes a ... 'm separating that out into "return address predictor". See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm looking for an more efficient alternative to brute force for finding the longest sub array of an array with a non-negative sum. The numbers ... a better direction Any help would be appreciated! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Does anyone know the running time in big O notation for the arrays.sort java method? I need this for my science fair project. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    In benchmarking some Java code on a Solaris SPARC box, I noticed that the first time I call the benchmarked function it runs EXTREMELY slowly (10x difference): First ... ) counter++; counter -= 99; } } } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I wanted to ask if anyone knows about any Java 7 issues with FTP? I've used both the Sun Net and Apache Commons Net libraries and both ... firewall conflict. Thanks in advance for any insight given. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    As we all know the stopwatch might have issues in a multi-threaded async application that will be running on all cores. On a multiprocessor computer, it ... DateTime.UtcNow.Ticks can provide. (10-15ms) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am learning about mobile web apps, and they look interesting. Among other things, I am wondering whether there is a significant difference in battery ... web apps? (Phonegap, intel xdk, etc)? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I've done some testing with Streams in special with DirectoryStreams of the nio-package. I simply try to get a list of all files in a directory ... twice and caching in an Object is bursting performance. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am working with VBA in Excel to retrieve some information from the Reuters 3000 Database. The data I retrieve comes as a bidimensional array consisting ... data has been retrieved) Thanks in advanced. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a Qt application and I'd like to show some log. I use a TextArea. However, if the log is large or the events come ... ; m_rawCommunication = val; emit rawCommunicationChanged(m_rawCommunication); } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Graphics g; using (var bmp = new Bitmap(_frame, _height, PixelFormat.Format24bppRgb)) { var data = bmp.LockBits(new Rectangle(0, 0, _frame, _height), ... handle an array of 4 million for the same time. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want to list all possible pairs of the integers [1, n] with a large n. I find myself looking for the fastest option. This is what I've come up ... what are other options that may or may not be faster? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Recently, I had a discussion on SO (see it for the context) about the two following pieces of code: res = [d.get(next((k for k in d if k in s), ... k in s was true, put v on the stack for the YIELD_VALUE. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I've been led to believe that for single variable assignment in T-SQL, set is the best way to go about things, for two reasons: it's the ANSI ... fast? Am I ever really going to notice the difference? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a simple JMeter throughput test that spawns 20 threads and each thread executes a simple SQL query against a database. I have set a ramp up time of ... . Is there anyway I can do that in JMeter? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    When I compile C code with a recent compiler on an amd64 or x86 system, functions are aligned to a multiple of 16 bytes. How much does this ... because the function starts to span multiple cache lines. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    We have many hive queries that take lot of time. We are using tez and other good practices like CBO, using orc files etc. Is there a way to check / ... help and if so, which parameter should I look for? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    How can I (efficiently - not slowing the computer [cpu]) highlight a specific part of a page? Lets say that my page is as so: <html> <head> </head> ... . Do you have any other ideas? (be creative :) ) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Inspired by this answer to FLOPS per cycle for sandy-bridge and haswell SSE2/AVX/AVX2 what are the numbers of just-loads/loads-and-stores which one ... /memory bandwidths, I'm only asking about issues. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    As an answer on my question: Is it normal that sqlite.fetchall() is so slow? it seems that fetch-all and fetch-one can be incredibly slow for sqlite ... busy, so it's also very slow using the commandline. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    In languages such as... well anything, both operators for < and <= (and their opposites) exist. Which would be faster, and how are they interpreted? if (x <= y) { blah; } or if (x < y + 1) { blah; } See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Solving a recent Advent of Code problem, I found my default Python was ~40x slower than PyPy. I was able to get that down to about 17x with this code ... with the PyPy JIT, which did all this for free! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am pushing n entries into Java LinkedList at O(1). There are few unique items i would like to remove later on at O(1). I though ... rather use LinkedList or some other Java class already implemented. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Edit: It turns out that things generally (not just array/ref operations) slow down the more arrays have been created, so I guess this might just be ... ), and whatever overhead that causes for the GC. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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