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A fast method to round a double to a 32-bit int explained
...de (supposing it's a 32-bit int) is the one on the right in the figure, so what you are doing in the end is just taking the lowest 32 bits of mantissa.
Now, to the magic number; as you correctly stated, 6755399441055744 is 2^51 + 2^52; adding such a number forces the double to go into the "sweet ...
Android Fragment onClick button Method
...kListener(this);
}
public void onClick(final View v) { //check for what button is pressed
switch (v.getId()) {
case R.id.responseButton1:
c *= fComm.fragmentContactActivity(2);
break;
case R.id.responseButton2:
...
Python dictionary from an object's fields
...tion:
>>> vars(a)
{'c': 2, 'b': 1}
Alternatively, depending on what you want to do, it might be nice to inherit from dict. Then your class is already a dictionary, and if you want you can override getattr and/or setattr to call through and set the dict. For example:
class Foo(dict):
...
Most efficient way to concatenate strings?
What's the most efficient way to concatenate strings?
17 Answers
17
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C++ Object Instantiation
...orials demonstrate object
instantiation using a snippet such as ...
So what you've discovered is that most tutorials suck. ;)
Most tutorials teach you lousy C++ practices, including calling new/delete to create variables when it's not necessary, and giving you a hard time tracking lifetime of yo...
Proper URL forming with Query String and Anchor Hashtag
When both a query string and anchor tag (hash tag) are visible in a URL, what is the proper order for them to appear?
4 Ans...
How to force a WPF binding to refresh?
...
@JonathanWood: Well, i cannot divine what kind of code you have, including what your binding looks like. Does the binding even work in the first place?
– H.B.
Jul 4 '16 at 15:31
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How to convert ASCII code (0-255) to its corresponding character?
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What is the reason for the (char) designation? In other words, why can't I just put Character.toString(i); ? (Java noob)
– Adam Hughes
Oct 9 '15 at 14:19
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How can I check if string contains characters & whitespace, not just whitespace?
What is the best way to check if a string contains only whitespace?
9 Answers
9
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Convert nullable bool? to bool
...
You ultimately have to decide what the null bool will represent. If null should be false, you can do this:
bool newBool = x.HasValue ? x.Value : false;
Or:
bool newBool = x.HasValue && x.Value;
Or:
bool newBool = x ?? false;
...