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MySQL: Insert record if not exists in table
...tnames (name, address, tele)
SELECT * FROM (SELECT 'Rupert', 'Somewhere', '022') AS tmp
WHERE NOT EXISTS (
SELECT name FROM table_listnames WHERE name = 'Rupert'
) LIMIT 1;
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
SELECT * FROM `table_listnames`;
+----+------...
What is the difference between String.slice and String.substring?
...nts.
If either argument is negative or is NaN, it is treated as if it were 0.
Distinctions of slice():
If start > stop, slice() will return the empty string. ("")
If start is negative: sets char from the end of string, exactly like substr() in Firefox. This behavior is observed in both Firefo...
Formatting “yesterday's” date in python
...
406
Use datetime.timedelta()
>>> from datetime import date, timedelta
>>> yester...
How to verify that method was NOT called in Moq?
...
answered Feb 11 '09 at 16:13
Dan FishDan Fish
2,24211 gold badge1414 silver badges88 bronze badges
...
Github: readonly access to a private repo
...oo bad you've got to pay $25/mo for that feature. For a small site, that $300/yr can pay for a lot of hosting elsewhere. Thanks @Trindaz
– Joseph Lust
Apr 30 '14 at 15:21
7
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What is the syntax for a default constructor for a generic class?
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answered Dec 9 '16 at 10:25
RogerWRogerW
36944 silver badges77 bronze badges
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How to get the last element of a slice?
...
307
For just reading the last element of a slice:
sl[len(sl)-1]
For removing it:
sl = sl[:len(s...
Passing multiple values to a single PowerShell script parameter
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180
The easiest way is probably to use two parameters: One for hosts (can be an array), and one for ...
Updating and committing only a file's permissions using git version control
...|
edited Jun 12 '19 at 21:07
Dan Anderson
1,97211 gold badge55 silver badges1818 bronze badges
answered ...
Why does Pycharm's inspector complain about “d = {}”?
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edited Dec 6 '11 at 20:47
codeape
85.4k2222 gold badges134134 silver badges163163 bronze badges
ans...