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how to fire event on file select
...ent doesn't trigger when I select the same file again. Any other way which can work every time?
– Tᴀʀᴇǫ Mᴀʜᴍᴏᴏᴅ
Dec 21 '17 at 13:07
1
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Check if list contains any of another list
... of O(n^2) for the first approach (the equivalent of two nested loops) you can do the check in O(n) :
bool hasMatch = parameters.Select(x => x.source)
.Intersect(myStrings)
.Any();
Also as a side comment you should capitalize your class name...
postgresql - add boolean column to table set default
...
ALTER TABLE users
ADD COLUMN "priv_user" BOOLEAN DEFAULT FALSE;
you can also directly specify NOT NULL
ALTER TABLE users
ADD COLUMN "priv_user" BOOLEAN NOT NULL DEFAULT FALSE;
UPDATE: following is only true for versions before postgresql 11.
As Craig mentioned on filled tables it is mor...
How to disable/enable the sleep mode programmatically in iOS?
...f a countdown but it will go into 'sleep mode' whenever it reaches the allocated time to sleep.
4 Answers
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Passing a function with parameters as a parameter?
...unction wrapper that knows about the parameter and passes it to the actual callback implementation.
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Why are functions and methods in PHP case-insensitive?
Functions and methods in PHP are case-insensitive as illustrated in the following example.
2 Answers
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Using python “with” statement with try-except block
...nt
The code you described as old way
of doing things has a serious bug:
in case opening the file fails you
will get a second exception in the
finally clause because f is not
bound.
The equivalent old style code would be:
try:
f = open("file", "r")
try:
line = f.readline()
fina...
PostgreSQL: Can you create an index in the CREATE TABLE definition?
...primary keys by default, as described in this note:
PostgreSQL automatically creates an index for each unique constraint and primary key constraint to enforce uniqueness.
Other than that, if you want a non-unique index, you will need to create it yourself in a separate CREATE INDEX query.
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How to copy from current position to the end of line in vi
... of line in vi and paste it in another file opened in vi. I googled it but cant find any solution for this. Appreciate any help on this. Thank you.
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creating a random number using MYSQL
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This should give what you want:
FLOOR(RAND() * 401) + 100
Generically, FLOOR(RAND() * (<max> - <min> + 1)) + <min> generates a number between <min> and <max> inclusive.
Update
This full statement should work:
SELECT name, address, FLOOR(RAND() * 401) + 100...