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How to read from a file or STDIN in Bash?
The following Perl script ( my.pl ) can read from either the file on the command line args or from STDIN:
15 Answers
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How do you set the Content-Type header for an HttpClient request?
...ader of the content, not of the request, which is why this is failing. AddWithoutValidation as suggested by Robert Levy may work, but you can also set the content type when creating the request content itself (note that the code snippet adds application/json in two places-for Accept and Content-Type...
How can I use an array of function pointers?
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You have a good example here (Array of Function pointers), with the syntax detailed.
int sum(int a, int b);
int subtract(int a, int b);
int mul(int a, int b);
int div(int a, int b);
int (*p[4]) (int x, int y);
int main(void)
{
int result;
int i, j, op;
p[0] = sum; /* address...
What Computer Science concepts should I know? [closed]
...y of Amazon, now at Google):
The Five Essential Phone Screen Questions
It goes into some detail about the the five most important concepts that developers should be required to know:
Basic programming (including recursion, file I/O, formatted output, loops etc)
Object oriented design (includin...
How to change column datatype in SQL database without losing data
...this using the following command. Any value of 0 will be turned into a 0 (BIT = false), anything else will be turned into 1 (BIT = true).
ALTER TABLE dbo.YourTable
ALTER COLUMN YourColumnName BIT
The other option would be to create a new column of type BIT, fill it from the old column, and onc...
php execute a background process
... to execute a directory copy upon a user action, but the directories are quite large, so I would like to be able to perform such an action without the user being aware of the time it takes for the copy to complete.
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How does the SQL injection from the “Bobby Tables” XKCD comic work?
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It drops the students table.
The original code in the school's program probably looks something like
q = "INSERT INTO Students VALUES ('" + FNMName.Text + "', '" + LName.Text + "')";
This is the naive way to add text inpu...
Center a map in d3 given a geoJSON object
... if you have a geoJSON object that you are going to draw you have to scale it and translate it in order to get it to the size that one wants and translate it in order to center it. This is a very tedious task of trial and error, and I was wondering if anyone knew a better way to obtain these values?...
How to prove that a problem is NP complete?
I have problem with scheduling. I need to prove that the problem is NP complete. What can be the methods to prove it NP complete?
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How to Select Columns in Editors (Atom,Notepad++, Kate, VIM, Sublime, Textpad,etc) and IDEs (NetBean
How to select columns in Editors and IDEs to columnar delete, insert or replace some characters ?
21 Answers
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