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Import CSV to SQLite
...
Here's how I did it.
Make/Convert csv file to be seperated by tabs (\t) AND not enclosed by any quotes (sqlite interprets quotes literally - says old docs)
Enter the sqlite shell of the db to which the data needs to be added
sqlite> .separator "\...
Differences between fork and exec
...eplace the entire current process with a new program. It loads the program into the current process space and runs it from the entry point.
So, fork and exec are often used in sequence to get a new program running as a child of a current process. Shells typically do this whenever you try to run a p...
CDC:DrawText 多行显示文本（文本自动换行） - C++ UI - 清泛IT社区，为创新赋能！
... | DT_TOP | DT_WORDBREAK | DT_EDITCONTROL, m_pfSongTi);
函数原型：
int DrawText(
HDC hDC, // handle to DC
LPCTSTR lpString, // text to draw
int nCount, // text length
LPRE...
Double vs single quotes
... -> get special character
puts '\1' -> get \1
so looks like * was convert to escaped character in double quotes, but not in single quotes.
BTW, it will impact the output when using in regular expression
e.g.,
str.gsub(/regular expression/, '\1,\2')
...
Change EOL on multiple files in one go
... files are not already unix-style. Since replacing \n with \r\n will also convert \r\n to \r\r\n.
– Kirk Woll
Jan 10 '14 at 21:41
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What is polymorphism, what is it for, and how is it used?
...orm.
So polymorphism is the ability (in programming) to present the same interface for differing underlying forms (data types).
For example, in many languages, integers and floats are implicitly polymorphic since you can add, subtract, multiply and so on, irrespective of the fact that the types a...
Android: create a popup that has multiple selection options
...y to an AlertDialog.Builder with the method setItems(CharSequence[], DialogInterface.OnClickListener).
An example:
String[] colors = {"red", "green", "blue", "black"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Pick a color");
builder.setItems(colors, new Dialo...
How do I deep copy a DateTime object?
...
$date1 = new DateTime();
$date2 = new DateTime();
$date2->add(new DateInterval('P3Y'));
Update:
If you want to copy rather than reference an existing DT object, use clone, not =.
$a = clone $b;
share
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error: use of deleted function
..., which would not be initialized by the default ctor.
class X {
const int x;
};
Since X::x is const, it must be initialized -- but a default ctor wouldn't normally initialize it (because it's a POD type). Therefore, to get a default ctor, you need to define one yourself (and it must initializ...
How do I replace multiple spaces with a single space in C#?
... @Shiva, /\s\s+/ is a standard POSIX regex statement and may be converted/used in any language using own syntax
– radistao
Apr 29 '14 at 6:45
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