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How can I use optional parameters in a T-SQL stored procedure?
... It should go without saying that this approach quickly becomes a maintenance nightmare.
– Atario
May 24 '18 at 22:58
3
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How can I initialize a String array with length 0 in Java?
...
@Thomas: I take your point, but for this particular case I prefer the more explicit form. It's clearer to me that it means "I want a string array with 0 elements" rather than "I want an array with this content - which is empty". Just personal prefe...
C++ STL Vectors: Get iterator from index?
...rst, last) is the function I want... except I only have first and last as ints. Is there any nice way I can get an iterator to these values?
...
How to Validate a DateTime in C#?
...s another variation of the solution that returns true if the string can be converted to a DateTime type, and false otherwise.
public static bool IsDateTime(string txtDate)
{
DateTime tempDate;
return DateTime.TryParse(txtDate, out tempDate);
}
...
Count number of days between two dates
... dates.
The one that comes closest is by thatdankent. A full answer would convert to_i and then divide:
(Time.now.to_i - 23.hours.ago.to_i) / 86400
>> 0
(Time.now.to_i - 25.hours.ago.to_i) / 86400
>> 1
(Time.now.to_i - 1.day.ago.to_i) / 86400
>> 1
In the question's specific e...
How to calculate time difference in java?
...
Just like any other language; convert your time periods to a unix timestamp (ie, seconds since the Unix epoch) and then simply subtract.
Then, the resulting seconds should be used as a new unix timestamp and read formatted in whatever format you want.
Ah...
“Variable” variables in Javascript?
...You can use the JavaScript eval(str) function.
What this function does is convert the string provided into JS code, then executes it.
For example:
eval("console.log('hello world')"); // Logs hello world
So to use it as a variable variable, you can do the following:
var a = "hello";
var hello =...
Selecting a row of pandas series/dataframe by integer index
...access to the pandas table, one can also consider numpy.as_array option to convert the table to Numpy array as
np_df = df.as_matrix()
and then
np_df[i]
would work.
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获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...看看 FAT12/FAT16 的一些字段的意义。
36
BIOS int13h 磁盘号。
不
37
不用。
不
38
如果其值是 0x29 ，则下一个值有效。
不
39-42
卷数
不
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Play audio with Python
...k like it can play .mp3 files without external libraries. You could either convert your .mp3 file to a .wav or other format, or use a library like PyMedia.
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