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Remove an item from a dictionary when its key is unknown
What is the best way to remove an item from a dictionary by value, i.e. when the item's key is unknown? Here's a simple approach:
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Regular expression to match numbers with or without commas and decimals in text
...IT: Since this has gotten a lot of views, let me start by giving everybody what they Googled for:
#ALL THESE REQUIRE THE WHOLE STRING TO BE A NUMBER
#For numbers embedded in sentences, see discussion below
#### NUMBERS AND DECIMALS ONLY ####
#No commas allowed
#Pass: (1000.0), (001), (.001)
#Fail:...
Why should a function have only one exit-point? [closed]
...ario. BTW, the real key to "single exit point" lies in understanding that what matters is that for each particular call to a normal function, the exit point is the point immediately after the call. Programmers nowadays take that for granted, but things were not always thus. In some rare cases cod...
How to add elements to an empty array in PHP?
....., I've got experience with a lot of languages and I'd never guess that's what it does.
– Erti-Chris Eelmaa
Oct 13 '16 at 18:02
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show 7 mo...
How to get the first five character of a String
...tead test for null+empty, then Trim if that is specified behavior, then do whatever tests/operations are needed.)
– ToolmakerSteve
Feb 12 '18 at 16:05
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Most efficient way to check for DBNull and then assign to a variable?
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I must be missing something. Isn't checking for DBNull exactly what the DataRow.IsNull method does?
I've been using the following two extension methods:
public static T? GetValue<T>(this DataRow row, string columnName) where T : struct
{
if (row.IsNull(columnName))
re...
Difference between using Throwable and Exception in a try catch
..." is the only difference specified and it's really a comprehensive answer: What is Error? Why does it matter that it includes it? Any other differences or best practices?
– Oded Niv
Oct 7 '19 at 7:15
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Trying to SSH into an Amazon Ec2 instance - permission error
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Thanks so much! What does chmod 400 do? to mykey.pem?
– Costa
May 14 '13 at 1:44
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How large should my recv buffer be when calling recv in the socket library
... bytes, because they'll certainly need to be fragmented and reassembled.
What happens if recv gets a packet larger than the buffer?
SOCK_STREAM: The question doesn't really make sense as put, because stream sockets don't have a concept of packets - they're just a continuous stream of bytes. If ...
Converting NSString to NSDate (and back again)
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im not sure if 2 y's work. but rule of thumb is what ever format youre going to gave keeo the same format for the setDateFormat. so first trty 2010 and write 4 y's like so 'yyyy'. as im sure that will defnitely work
– Pavan
Oct 12 '10...