Search Results

Search found 20799 results on 832 pages for 'long integer'.

Page 64/832 | < Previous Page | 60 61 62 63 64 65 66 67 68 69 70 71  | Next Page >

• Why is floating point byte swapping different from integer byte swapping?

  - by CJ

  I have a binary file of doubles that I need to load using C++. However, my problem is that it was written in big-endian format but the fstream operator will then read the number wrong because my machine is little-endian. It seems like a simple problem to resolve for integers, but for doubles and floats the solutions I have found won't work. How can I (or should I) fix this? I read this as a reference for integer byte swapping: http://stackoverflow.com/questions/105252/how-do-i-convert-between-big-endian-and-little-endian-values-in-c

  Read the article

• Given two lines on a plane, how to find integer points closest to their interseciton?

  - by Lukasz Lew

  I can't solve it: You are given 8 integers: A, B, C representing a line on a plane with equation A*x + B*y = C a, b, c representing another line x, y representing a point on a plane The two lines are not parallel therefore divide plane into 4 pieces. Point (x, y) lies inside of one these pieces. Problem: Write a fast algorithm that will find a point with integer coordinates in the same piece as (x,y) that is closest to the cross point of the two given lines. Note: This is not a homework, this is old Euler-type task that I have absolutely no idea how to approach.

  Read the article

• How to convert string "0671" or "0x45" into integer form with 0 and 0x in the beginning.

  - by Harshit Sharma

  I wanted to make my own encryption algorithm and decryption algorithm , encryption algorithm works fine and converts ascii value of the characters into alternate hexadecimal and octal representations. But when I tried decryption, problem occured as it return int('0671') = 671, as 0671 is string type in the following code. Is there a method to convert "ox56" into integer form?????? NOTE: Following string is alternate octal and hexa of ascii value of char. ///////////////DECRYPTION/////// l="01630x7401620x6901560x67" f=len(l) k=0 d=0 x=[] for i in range(0,f,4): g=l[i:i+4] print g k=k+1 if(k%2==0): p=g print p else: p=int(g) print p

  Read the article

• Why does concatenating a boolean value return an integer?

  - by joshhunt

  In python, you can concatenate boolean values, and it would return an integer. Example: >>> True True >>> True + True 2 >>> True + False 1 >>> True + True + True 3 >>> True + True + False 2 >>> False + False 0 Why? Why does this make sense? I understand that True is often represented as 1, whereas False is represented as 0, but that still does not explain how adding two values together of the same type returns a completely different type.

  Read the article

• Given two lines on a plane, how to find integer points closest to their intersection?

  - by Lukasz Lew

  I can't solve it: You are given 8 integers: A, B, C representing a line on a plane with equation A*x + B*y = C a, b, c representing another line x, y representing a point on a plane The two lines are not parallel therefore divide plane into 4 pieces. Point (x, y) lies inside of one these pieces. Problem: Write a fast algorithm that will find a point with integer coordinates in the same piece as (x,y) that is closest to the cross point of the two given lines. Note: This is not a homework, this is old Euler-type task that I have absolutely no idea how to approach. Update: You can assume that the 8 numbers on input are 32-bit signed integers. But you cannot assume that the solution will be 32 bit.

  Read the article

• Why does DateTime to Unix time use a double instead of an integer?

  - by Earlz

  I'm needing to convert a DateTime to a Unix timestamp. So I googled it looking for some example code In just about all the results I see, they use double as the return for such a function, even when explicitly using floor to convert it to an integer. Unix timestamps are always integers. So what problem is there with using either long or int instead of double? static double ConvertToUnixTimestamp(DateTime date) { DateTime origin = new DateTime(1970, 1, 1, 0, 0, 0, 0); TimeSpan diff = date - origin; return Math.Floor(diff.TotalSeconds); }

  Read the article

• How to determine if a decimal/double is an integer?

  - by Jim Geurts

  How do I tell if a decimal or double is an integer? For example: decimal d = 5.0; // Would be true decimal f = 5.5; // Would be false or double d = 5.0; // Would be true double f = 5.5; // Would be false The reason I would like to know this, is so that I can determine programmatically if I want to output the value using .ToString("N0") or .ToString("N2"). If there is no decimal point value, then I don't want to show that.

  Read the article

• Can using non primitive Integer/ Long datatypes too frequently in the application, hurt the performance??

  - by Marcos

  I am using Long/Integer data types very frequently in my application, to build Generic datatypes. I fear that using these wrapper objects instead of primitive data types may be harmful for performance since each time it needs to create objects which is an expensive operation. but also it seems that I have no other choice(when I have to use primtives with generics) rather than just using them. However, still it would be great if you can suggest if there is anything I could do to make it better. or any way if I could just avoid it ?? Also What may be the downsides of this ? Suggestions welcomed!

  Read the article

• Warning: non-integer #successes in a binomial glm! (survey packages)

  - by longrob

  I am using the twang package to create propensity scores, which are used as weigtings in a binomial glm using survey::svyglm. The code looks something like this: pscore <- ps(ppci ~ var1+var2+.........., data=dt....) dt$w <- get.weights(pscore, stop.method="es.mean") design.ps <- svydesign(ids=~1, weights=~w, data=dt,) glm1 <- svyglm(m30 ~ ppci, design=design.ps,family=binomial) This produces the following warning: Warning message: In eval(expr, envir, enclos) : non-integer #successes in a binomial glm! Does anyone know what I could be doing wrong ? I wasn't sure if this message would be better on stats.SE, but on balance I thought I would try here first.

  Read the article

• In SQL how do I get the maximum value for an integer?

  - by CoffeeMonster

  Hi, I am trying to find out the maximum value for an integer (signed or unsigned) from a MySQL database. Is there a way to pull back this information from the database itself? Are there any built-in constants or functions I can use (either standard SQL or MySQL specific). At http://dev.mysql.com/doc/refman/5.0/en/numeric-types.html it lists the values - but is there a way for the database to tell me. The following gives me the MAX_BIGINT - what I'd like is the MAX_INT. SELECT CAST( 99999999999999999999999 AS SIGNED ) as max_int; # max_int | 9223372036854775807 Thanks in advance,

  Read the article

• 'array bound is not an integer constant' when defining size of array in class, using an element of a const array

  - by user574733

  #ifndef QWERT_H #define QWERT_H const int x [] = {1, 2,}; const int z = 3; #endif #include <iostream> #include "qwert.h" class Class { int y [x[0]]; //error:array bound is not an integer constant int g [z]; //no problem }; int main () { int y [x[0]]; //no problem Class a_class; } I can't figure out why this doesn't work. Other people with this problem seem to be trying to dynamically allocate arrays. Any help is much appreciated.

  Read the article

• What is the most efficient way to pass data (list of pairs of [Integer + Double]) between two Google App Engine instances?

  - by ruslan

  What is the most efficient way to pass data (list of pairs of [Integer, Double]) between two Google App Engine instances ? Currently I use Java binary serialization. Frontend servlet receives data from the client in JSON format. I convert it to byte[] using ObjectOutput.writeObject and then send it to backend servlet via HTTP POST. It's not in production yet. Should I just pass client's JSON as it is to backend? It seems more logical. But it's bigger in size. Or should I use Google Protocol Buffers as stated in this benchmark article ? Thank you!!!

  Read the article

• How can I put a string and an integer into the same array?

  - by Stelios M

  I have to following code. I want this to return an array e.g. arg[] that contains at arg[0] the number of the rows of my cursor and at arg[1] String(0) of my cursor. Since one is integer and the other is string I have a problem. Any ideas how to fix this? public String[] getSubcategoriesRow(String id){ this.openDataBase(); String[] asColumnsToReturn = new String[] {SECOND_COLUMN_ID,SECOND_COLUMN_SUBCATEGORIES,}; Cursor cursor = this.dbSqlite.query(SECOND_TABLE_NAME, asColumnsToReturn, SECOND_COLUMN_SUBCATEGORIES + "= \"" + id + "\"", null, null, null, null); String string = cursor.getString(0); int count = cursor.getCount(); String arg[] = new String[]{count, string}; cursor.close(); return arg; } The cursor and the results and correct i just need to compine them to an array in order to return that.

  Read the article

• C++ how to store integer into a binary file??

  - by blaxc

  i gt a struct with 2 integer, i want to store them in a binary file and read it again... here is my code... struct pw { int a; int b; }; void main(){ pw* p = new pw(); pw* q = new pw(); std::ofstream fout(ADMIN_FILE, ios_base::out | ios_base::binary | ios_base::trunc); std::ifstream fin(ADMIN_FILE, ios_base::in | ios_base::binary); p->a=123; p->b=321; fout.write((const char*)p, sizeof(pw)); fin.write((char*)q, sizeof(pw)); fin.close(); cout<< q->a << endl;} my output is 0. anyone can tell me what is the problem?

  Read the article

• Why does my computer slow down after being on too long?

  - by RoboShop

  I'm sure everyone has experienced it - if you leave a computer on too long, every once in a while, it needs a fresh reboot. I have a laptop, and I only hibernate it, but every week or two, I'm going to need to restart otherwise it will just slow down (usually when windows update makes me restart) I was wondering though... why? What are some of the things that occur that eat up memory that can seemingly not be freed unless I reboot the OS. In addition, are there any programs I can get that can free up this memory and keep the computer alive for longer? Preferably for windows 7.

  Read the article

• How long does a MacBook Pro battery last on a single charge?

  - by Click Upvote

  On the official apple website it says that all Macbook pro batteries last for 7 hours, and 8 hours on the 17" macbook pro. However when I called my local apple retailer and asked him, he said the battery has a 'stand by' time of 7 hours, but if I were doing something like using an IDE to program and not watching videos, etc it could last upto 5-6 hours. When I asked him about why the official site says 7 hours, he said yes but he didn't want to lie to me, and actually the battery only lasts 5-6 hours. Does anyone who owns a macbook pro shed any light on this, such as how long the battery will actually last? I'll be buying a 15" macbook pro.

  Read the article

• Are there mapping utilities out there that will let me import geo position data (lat/long) and plot the points on a map?

  - by GregH

  I have a data file with a bunch of lat/long positions. Is there any mapping software out there (google maps, etc) that will allow me to import the positions from the file and plot them on a map? I would be this can be done through google maps but I'm not sure how to do it. I just want something that I can use quickly with a minimal amount of programming to do. I don't need to annotate anything. Just view where the points are on the map. I'm just wondering if there is something already available out there to import into google maps.

  Read the article

• For how long do I need to store the logs?

  - by mindas

  I will soon be running an internet-based public service which will physically be hosted in the UK on a virtual server. The virtual server is provided by the ISP. I was wondering if there is/are any legal requirement(s) to keep access logs, and if yes - for how long? There is a Wikipedia article that touches this subject but I'm afraid my brain just can't grasp the legislative gibberish. I believe there's EU law and there's UK law; and I do need to comply to both, right? Can somebody explain this in pure layman's terms?

  Read the article

• My website is infected, I restored a backup of the uninfected files, how long will it take to un-mark as dangerous?

  - by Cyclone

  My website www.sagamountain.com was recently infected by a malware distributor (or at least I think it may have been). I have removed all external content, google ads, firefly chat, etc. I uploaded a backup from a few weeks ago, when there was no issue. I patched the SQL injection hole. Now, how long will it take to unmark it as dangerous? Where can I contact google? I am not sure if this is the right place to post it, but since it may have been a server issue I may as well. Can sites inject base64 code via a virus on the whole server, or is it only via sql injection? Thanks for the help, viruses freak me out. Is there an online virus scanner that can scan my page and tell me what is wrong?

  Read the article

• Make shortened and long urls play together on the same domain (RewriteRule).

  - by Renato Renato

  Long story short, I want to have both example.com/aJ5 and example.com/any-other-url working together. I'm using apache and not very good at writing regex. I have already a global RewriteRule which sends everything to the app entry point. What I need is to tell apache if length($path) is <= 5 chars then rewrite to another location. I know I can use {1,5} like syntax in regex, but don't really know if it's what I'm looking for. I'd like to implement this at web-server level rather than php level. Any help is appreciated.

  Read the article

• How long will the serial port be around for?

  - by Andy

  It seems that the serial port has a remarkable ability to stick around. You might call it the hardware equivalent of Windows XP. Despite pretty much physically disappearing from laptops and the like, the need to use a serial port still exists, even if it means using a converter of some sort. It is very much a legacy piece of hardware, and yet so many devices and instruments still use it. I use it myself daily in my work with PLC's, HMI's, barcode readers, etc. In my opinion, I don't think it is going anywhere soon, but how long do you think it has got before joining the museum? Do you think it ever will?

  Read the article

• Computers "applying computer settings" for a long time on start-up...why?

  - by tombull89

  Hello. Might be a bit of a slong shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when it gets to "applying computer settings" it can hang for a long time (~15 minutes). If you unplug the computer from the network it starts up fine, gets to the login screen, then you can plug the network cable in and it will work fine. I don't think it's anything to do with the fact we've been coming close to running out of IP addresses or a problem with our DHCP. Microsoft KB says apply the latest service pack, which we've done, and check a service. Servers and domian controllers are S2003, Computers and Desktops are XP. Does anybody have any thoughts on what to try?

  Read the article

• Does the mplayer-mozilla plugin have a problem with long DIVX videos or is this a problem with the U

  - by creamcheese

  Pretty consistently when I'm watching a long DIVX movie in the browser on Karmic - say 2 hours or so - the mplayer-mozilla player stops after a half-hour or an hour and resets back to 0, so I have to reload the whole movie again over the web. It happens repeatedly so I never get past the half-way point in the DIVX version of the movie - I have to watch a flash version instead. I don't know if this is an mplayer issue or a Firefox memory issue. Anyone have any idea how to resolve this?

  Read the article

• Resizing partition in Windows 7: how long does it take?

  - by PaulJ

  Okay, maybe this is me worrying about nothing, but... I have a 500 Gb. external drive where I want to create a second partition. I plug it into my Windows 7 box, use Disk Manager and pick the "Shrink Volume" option. It says that the maximum amount to shrink is around 150 Gb. I hit "OK" and it starts working... and it's been going on for about half an hour. The light of the external HD is constantly working. Disk Manager is greyed out and has the "does not respond" message on the top bar; basically, it's behaving as a non-responding application. Is this normal for a drive of this size, or did the application hang? How long would it typically take for a drive like this to resize its partition?

  Read the article

• update terminal title from standard output of long running command?

  - by Sam Hasler

  I'd like to change the title of a terminal window during a long running command (for example: git svn fetch) with values greped from the output, whilst still writing to standard output. Is this possible using named pipes or tee and xargs? I'm thinking something like git svn fetch | sed "s/^\(r\d*\).*$/ \"\\\033]0;\"\1\"\\\007\"/" | xargs -l1 echo -ne based on: http://tldp.org/HOWTO/Xterm-Title-3.html Update: getting this to work would be enough: (echo "r9" ; echo "r10") | sed "s/^\(r\d*\).*$/ \"\\\033]0;\"\1\"\\\007\"/" | xargs -l1 echo -ne Update 2: This almost does what I want. I see r10, but not r9: (echo "r9" ; sleep 1 ; echo "r10") | sed "s/^\(r[0-9]*\)\.*$/\\\033]0;\1\\\007/" | xargs -0 echo -ne

  Read the article

< Previous Page | 60 61 62 63 64 65 66 67 68 69 70 71  | Next Page >