array

g++ variable size array no warning?

匿名 (未验证) 提交于 2019-12-03 02:36:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: int a; cin >> a; int ints[a]; Why does this not throw any kind of warning while compiling? How do I know when this array thing is actually using the heap or the stack? g++ -std=c++11 -Wall *.cpp -o main 回答1: ISO C++ disallows the use of variable length arrays , which g++ happily tells you if you increase the strictness of it by passing it the -pedantic flag. Using -pedantic will issue a warning about things breaking the standard. If you want g++ to issue an error and with this refuse compilation because of such things; use -pedantic-errors .

Insert from list into array

匿名 (未验证) 提交于 2019-12-03 02:35:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I wanted to know how I can return an array of names currently on the leaderboard. This is the code I have: function top10(maximumResults) { //store the leaderboard elements //check if leaderboard is less than 10 //loop through leaderboard //return var output2 = document.getElementById("top10").getElementsByTagName("li"); var output = ""; for(var i = 0; i < output2.length; i++) { if(maximumResults.length < 10) { output[i] += output2[i].id; } } return output; } <div id=leaderboard class=panel> <h1>Leaderboard</h1> <ol id=top10> <li>test</li>

tensorflow: ValueError: setting an array element with a sequence

匿名 (未验证) 提交于 2019-12-03 02:35:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am playing with the fixed code from this question . I am getting the above error. Googling suggests it might be some kind of dimension mismatch, though my diagnostics does not show any: with tf.Session() as sess: sess.run(init) # Fit all training data for epoch in range(training_epochs): for (_x_, _y_) in getb(train_X, train_Y): print("y data raw", _y_.shape ) _y_ = tf.reshape(_y_, [-1, 1]) print( "y data ", _y_.get_shape().as_list()) print("y place holder", yy.get_shape().as_list()) print("x data", _x_.shape ) print("x place holder", xx

Catchable fatal error: Object of class PDOStatement could not be converted to string in /home/refined/public_html/refer.php on line 30

匿名 (未验证) 提交于 2019-12-03 02:35:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I currently am building a small and simple referral system. However I am having trouble trying to return how many referrals one single user has. When a new user registers it stores in a column called "referid" and that ID in there correspond to the ID of the username who referred him. However, upon attempting to find how many times that user's ID is mentioned in the "referid" column and then echoing it, I get this error: Catchable fatal error: Object of class PDOStatement could not be converted to string in /home/refined/public_html/refer

Array of zero size?

匿名 (未验证) 提交于 2019-12-03 02:35:01
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Generally we declare the array in following format: DataType array_name[SIZE]; SO If I tried creating 0 length array for e.g. int arr[0]; //Line#1 arr[0] = 5; //Line#2 I do not get any error when above code is executed.In this case is memory allocated for single integer? 回答1: Why does the Line#1 not generate any compilation error? Ideally, it should! It is not legal code to create an array of size 0 on local storage. Ideally, the compiler should issue you an error, probably some compiler extension allows this to compile but as per the

Display content of [object HTMLUListElement] using javascript

匿名 (未验证) 提交于 2019-12-03 02:34:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I have a javascript function which generates a ul list based on an array being passed in using a similar approach to this - Create a <ul> and fill it based on a passed array However, when I do the following... document.getElementById("list").innerHTML = generateListFromArray(array); All that gets printed is [object HTMLUListElement] Can anyone tell me how to print the contents into the div as HTML? 回答1: You're creating a proper UL element ( HTMLUListElement ), which is great. You can use that directly by simply appending it to your target:

Send the contents of Android ArrayList to PHP

匿名 (未验证) 提交于 2019-12-03 02:34:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I am working as a PHP developer (intermediate level) and do practice some android stuff at home. I have created and array list which will fetch into an sqlite db inside my Android app and populate a ListView. Now I am trying to take that one level further. I want to send that array list content to my PHP server where I can store the data given into mysql and fetch back to my app. How would I go about achieving this? 回答1: You can make use of JSON or XML for sending data from android to php server. On the PHP side, all you need is the built-in

Python numpy.fft changes strides

匿名 (未验证) 提交于 2019-12-03 02:34:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: Dear stackoverflow community! Today I found that on a high-end cluster architecture, an elementwise multiplication of 2 cubes with dimensions 1921 x 512 x 512 takes ~ 27 s. This is much too long since I have to perform such computations at least 256 times for an azimuthal averaging of a power spectrum in the current implementation. I found that the slow performance was mainly due to different stride structures (C in one case and FORTRAN in the other). One of the two arrays was a newly generated boolean grid (C order) and the other one

`Allocatable array must have deferred shape` when moving from g95 to gfortran

匿名 (未验证) 提交于 2019-12-03 02:33:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: When transitioning from using the g95 compiler to gfortran I get the following error when I try to compile what previously had been a working code Error: Allocatable array ' ' at (1) must have a deferred shape This happens in all of my subroutines for all of my allocatable arrays. An example is below. SUBROUTINE TEST(name,ndimn,ntype,nelem,npoin,nface,inpoel,coord,face) IMPLICIT NONE integer:: i, j,testing integer, INTENT(OUT)::ndimn,ntype,nelem,npoin,nface integer, allocatable, dimension(1:,1:), INTENT(OUT)::inpoel real::time, dummy real,

passing array data from an html form to php array variables

匿名 (未验证) 提交于 2019-12-03 02:33:02
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效,请关闭广告屏蔽插件后再试): 问题: I have a form to record the hours worked on a set of projects. the form uses an array for the project id, hours, and a notes field, with the form lines being a loop on the number of projects. the form passes the data to a PHP script for processing. The PHP script is not seeing the values in the array... it's just giving me "Array" as the output. Documentation and other examples have me wondering if I have to serialize or unserialize or something else to get things to work right, but multiple attempts have been unsuccessful. In the form: