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How does the Windows Command Interpreter (CMD.EXE) parse scripts?
...ere is a brief overview of phases in the batch file line parser:
Phase 0) Read Line:
Phase 1) Percent Expansion:
Phase 2) Process special characters, tokenize, and build a cached command block: This is a complex process that is affected by things such as quotes, special characters, token delimite...
Import text file as single character string
...s the correct size instead of a hard-coded size:
fileName <- 'foo.txt'
readChar(fileName, file.info(fileName)$size)
Note that readChar allocates space for the number of bytes you specify, so readChar(fileName, .Machine$integer.max) does not work well...
...
How to properly override clone method?
...ken.
Josh Bloch on Design - Copy Constructor versus Cloning
If you've read the item about cloning in my book, especially if you read between the lines, you will know that I think clone is deeply broken. [...] It's a shame that Cloneable is broken, but it happens.
You may read more discussion ...
Read only the first line of a file?
...
Use the .readline() method (Python 2 docs, Python 3 docs):
with open('myfile.txt') as f:
first_line = f.readline()
Some notes:
As noted in the docs, unless it is the only line in the file, the string returned from f.readline(...
Android: install .apk programmatically [duplicate]
... = new byte[1024];
int len1 = 0;
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);
}
fos.close();
is.close();
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(...
Upload files with HTTPWebrequest (multipart/form-data)
... FileStream fileStream = new FileStream(file, FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0) {
rs.Write(buffer, 0, bytesRead);
}
fileStream...
Loop through an array of strings in Bash?
...ee")
# get length of an array
arraylength=${#array[@]}
# use for loop to read all values and indexes
for (( i=1; i<${arraylength}+1; i++ ));
do
echo $i " / " ${arraylength} " : " ${array[$i-1]}
done
Output:
1 / 3 : one
2 / 3 : two
3 / 3 : three
...
How to handle AccessViolationException
...by your standard managed code. I won't get into the why's or how's here. Read this article about CSE's in the .NET 4.0 Framework:
http://msdn.microsoft.com/en-us/magazine/dd419661.aspx#id0070035
But there is hope. There are a few ways to get around this:
Recompile as a .NET 3.5 assembly and r...
Divide a number by 3 without using *, /, +, -, % operators
...oc(number,1);
fwrite(buf,number,1,fp);
rewind(fp);
int result=fread(buf,divisor,number,fp);
printf("%d / %d = %d", number, divisor, result);
free(buf);
fclose(fp);
return 0;
}
If also the decimal part is needed, just declare result as double and add to it the result of ...
Import pandas dataframe column as string not int
I would like to import the following csv as strings not as int64. Pandas read_csv automatically converts it to int64, but I need this column as string.
...