file-handling is an abstraction of common actions such as creating, opening, closing, reading, updating, writing, comparing and deleting files
Questions tagged [file-handling]
2915 questions
26
votes
4 answers
use of deleteOnExit() method in java
what is the difference between delete() and deleteOnExit() methods in java.io.File class in Java?
Vishal Chugh
- 337
- 1
- 6
- 12
25
votes
5 answers
How to find EOF while reading from a file
I am using the following code to read a file in Go:
spoon , err := ioutil.ReadFile(os.Args[1])
if err!=nil {
panic ("File reading error")
}
Now I check for every byte I pick for what character it is. For example:
spoon[i]==' ' //for…
Worlock
- 406
- 1
- 4
- 15
25
votes
3 answers
Modifying a text file in a ZIP archive in Java
My use case requires me to open a txt file, say abc.txt which is inside a zip archive which contains key-value pairs in the form
key1=value1
key2=value2
.. and so on where each key-value pair is in a new line.
I have to change one value…
Prabhakar
- 347
- 1
- 5
- 12
23
votes
3 answers
What is ios::in|ios::out?
I was reading some project code and I found this,here MembersOfLibrary() is a constructor of class MenberOfLibrary
class MembersOfLibrary {
public:
MembersOfLibrary();
~MembersOfLibrary() {}
void addMember();
void removeMember();
…
KidWithAComputer
- 311
- 1
- 2
- 10
21
votes
6 answers
mkdir() is not creating the new directory
I am using Eclipse and jdk1.7. I am making a basic program using file handling, in which an output directory inside the directory is to be made. But when I run the program, the output is showing false and the directory is not made. I thought that…
user2529216
- 493
- 1
- 3
- 11
19
votes
3 answers
How can I handle File Uploads in a Microservice Environment?
I am in the process of trying to make a decision on how, when and where to handle uploaded files from users. We are in a MicroService environment (PHP + Linux) for a new system to be deployed in the coming months. One key component is incoming…
SeaFuzz
- 1,177
- 9
- 28
16
votes
1 answer
How to check whether ifstream is end of file in C++
I need to read all blocks of one large file(about 10GB) sequentially, the file contains many floats with a few strings, like this(each item splited by '\n'):
6.292611
-1.078219E-266
-2.305673E+065
sod;eiwo
4.899747e-237
1.673940e+089
-4.515213
I…
user1024
- 982
- 4
- 13
- 26
16
votes
2 answers
Why do I get a SIGABRT here?
I have this code segment in which I am opening/closing a file a number of times (in a loop):
for(i=1;i
user59634
16
votes
1 answer
Reading all files in all directories
I have the code working to read in the values of a single text file but am having difficulties reading all files from all directories and putting all of the contents together.
Here is what I have:
filename = '*'
filesuffix = '*'
location =…
Relative0
- 1,567
- 4
- 17
- 23
16
votes
1 answer
Write to a file in Perl
Consider:
#!/usr/local/bin/perl
$files = "C:\\Users\\A\\workspace\\CCoverage\\backup.txt";
unlink ($files);
open (OUTFILE, '>>$files');
print OUTFILE "Something\n";
close (OUTFILE);
The above is a simple subroutine I wrote in Perl, but it doesn't…
Daanish
- 1,061
- 7
- 18
- 29
15
votes
2 answers
How can I use file_put_contents() with FILE_APPEND | LOCK_EX safety?
I'm using:
file_put_contents("peopleList.txt", $person, FILE_APPEND | LOCK_EX);
To write to the end of a file and to make sure no one else (or script) is also writing to the same file at the same time.
The PHP manual says it will return a falsy…
hozza
- 619
- 2
- 12
- 27
15
votes
3 answers
Can BufferedReader read bytes?
Sorry if this question is a dulplicate but I didn't get an answer I was looking for.
Java docs says this
In general, each read request made of a Reader causes a corresponding read request to be made of the underlying character or byte stream. It is…
TruePS
- 493
- 2
- 12
- 33
15
votes
2 answers
How feof() works in C
Does feof() checks for eof for the current position of filepointer or checks for the position next to current filepointer?
Thanks for your help !
Alfred James
- 1,029
- 6
- 17
- 27
13
votes
4 answers
C Win32: save .bmp image from HBITMAP
I am working with a framegrabber and need to get the images from computer memory and save them on an image file. after trying for couple of days I end up with the following 2 functions, which creates a file and windows OS is able to run the .bmp…
user261002
- 2,182
- 10
- 46
- 73
12
votes
3 answers
Python write to hdfs file
What is the best way to create/write/update a file in remote HDFS from local python script?
I am able to list files and directories but writing seems to be a problem.
I have searched hdfs and snakebite but none of them give a clean way to do this.
nishant
- 896
- 1
- 8
- 27