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What's the purpose of SQL keyword “AS”?
...rflow.com/a/4271250/814304. I would like to recommend ALWAYS use the full form of semantic to avoid such issues.
– iMysak
Aug 22 '16 at 22:24
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String formatting: % vs. .format vs. string literal
...int
from datetime import datetime,timedelta
once_upon_a_time = datetime(2010, 7, 1, 12, 0, 0)
delta = timedelta(days=13, hours=8, minutes=20)
gen =(once_upon_a_time +x*delta for x in xrange(20))
print '\n'.join(map('{:%Y-%m-%d %H:%M:%S}'.format, gen))
Results in:
['the number is 12', 'the nu...
C: What is the difference between ++i and i++?
...y of ++i and i++. In any non-student-project compiler, there will be no performance difference. You can verify this by looking at the generated code, which will be identical.
The efficiency question is interesting... here's my attempt at an answer:
Is there a performance difference between i++ and...
Javascript foreach loop on associative array object
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arr_jq_TabContents[key] sees the array as an 0-index form.
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How to perform Single click checkbox selection in WPF DataGrid?
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@user3690202 It's like DoEvents in Windows.Forms. After calling BeginEdit you need to wait for the cell to actually enter the edit mode.
– Jiří Skála
Oct 14 '15 at 10:17
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Gson ignoring map entries with value=null
...that null object fields are ignored. This allows for a more compact output format; however, the client must define a default value for these fields as the JSON format is converted back into its Java form.
Here's how you would configure a Gson instance to output null:
Gson gson = new GsonBuilde...
How to programmatically empty browser cache?
...-cache'>
You might also want to consider turning off auto-complete on form fields, although I'm afraid there's a standard way to do it (see this question).
Regardless, I would like to point out that if you are working with sensitive data you should be using SSL. If you aren't using SSL, anyone...
Finding the number of days between two dates
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$now = time(); // or your date as well
$your_date = strtotime("2010-01-31");
$datediff = $now - $your_date;
echo round($datediff / (60 * 60 * 24));
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Meaning of -
... the xml documentation. Document Type Declaration is not required for well formed xml.
– xvan
Nov 15 '16 at 12:18
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What is the difference between include and require in Ruby?
...y inheritance. class C; include M end makes M the superclass of C and the (former) superclass of C the superclass of M. I don't think that C's include works via inheritance, I think it is simple textual/lexical substitution.
– Jörg W Mittag
May 21 '17 at 8:08...