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Can a C# lambda expression have more than one statement?
...NET 4.0 did gain the ability to include multiple statements via Expression.Block but the C# language doesn't support that. It could, but that would require more design/implementation/test work.
– Jon Skeet
Jan 3 '18 at 8:43
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How to detect first time app launch on an iPhone
...eads can reach the if(!flag){ when flag is NO. they will get inside the if blocks. one of them will get to the inner else and set the NSUserDefaults and the second one will pass the "hasLaunchOnce" (because the first thread declared it) and set the result to NO. That means you can get the wrong valu...
Removing duplicate rows from table in Oracle
...
You should do a small pl/sql block using a cursor for loop and delete the rows you don't want to keep. For instance:
declare
prev_var my_table.var1%TYPE;
begin
for t in (select var1 from my_table order by var 1) LOOP
-- if previous var equal current...
Visual Studio: ContextSwitchDeadlock
...sible for pumping windows messages as the arrive, and yet because yours is blocked in database calls it is unable to do so. This can cause problems with system wide messages.
You should look at spawning a background thread for the long running operation and putting up some kind of "I'm busy" dialo...
Extreme wait-time when taking a SQL Server database offline
...e the stored procedure
sp_who2
This will allow you to see if there is any blocking locks.. kill their should fix it.
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Will #if RELEASE work like #if DEBUG does in C#?
... to run when compiled in debug mode? The code I want to surround with this block sends out a bunch of emails, and I don't want to accidentally send those out when testing.
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X-Frame-Options Allow-From multiple domains
...rl(data:image/png:...)
// https://www.owasp.org/index.php/Clickjacking_Defense_Cheat_Sheet
// https://www.ietf.org/rfc/rfc7034.txt
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
// https://...
find filenames NOT ending in specific extensions on Unix?
...a/f/g/7.txt
You can change the extensions list without changing the code block.
NOTE doesn't work with native OSX find - use gnu find instead.
Intellij shortcut to convert code to upper or lower case?
... documentation :
Ctrl + Shift + U : Toggle case of the
selected text block
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Pairs from single list
... obviously might need a fillvalue:
from itertools import izip_longest
def blockwise(t, size=2, fillvalue=None):
it = iter(t)
return izip_longest(*[it]*size, fillvalue=fillvalue)
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