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C# List to string with delimiter
Is there a function in C# to quickly convert some collection to string and separate values with delimiter?
2 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
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It's a lower-level solution. It's not always easy to convert regexps this way. On the other hand, this solution doesn't depend on top-level programming language ;)
– Konstantin
Mar 21 '18 at 12:43
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PostgreSQL Autoincrement
... equivalent function.
CREATE TABLE foo (
id SERIAL,
bar varchar);
INSERT INTO foo (bar) values ('blah');
INSERT INTO foo (bar) values ('blah');
SELECT * FROM foo;
1,blah
2,blah
SERIAL is just a create table time macro around sequences. You can not alter SERIAL onto an existing column.
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How do I use reflection to invoke a private method?
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I am going to get myself into so much trouble with this.
– Frank Schwieterman
Mar 10 '09 at 18:10
2
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How do I clone a single branch in Git?
...ore useful than it makes out?".
"Undoing" a shallow clone is detailed at "Convert shallow clone to full clone" (git 1.8.3+)
# unshallow the current branch
git fetch --unshallow
# for getting back all the branches (see Peter Cordes' comment)
git config remote.origin.fetch refs/heads/*:refs/remotes/...
What is the difference between varchar and varchar2 in Oracle?
... between an OCI client application and a database table, the OCI libraries convert the data between internal data types and external data types.
External types provide a convenience for the programmer by making it possible to work with host language types instead of proprietary data formats. OCI c...
How to get the current time as datetime
...s this:
let currentDateTime = Date()
However, Date is a 64-bit floating point number measuring the number of seconds since the reference date of January 1, 2001 at 00:00:00 UTC. I can see that number for the current datetime by using
Date().timeIntervalSinceReferenceDate
At the time of this writin...
How to make an HTTP request + basic auth in Swift
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I'm not sure if you need to escape anything before converting it to base64
– Sam Soffes
Feb 19 '16 at 5:50
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Python: How to get stdout after running os.system? [duplicate]
... didn't. I'm using ubuntu and this command: out = os.system('ffmpeg -i ' + converted_filename + ' -ss ' + str(thumbnail_frame_time) + ' -vf scale=254:152 -vframes 1 -vcodec png -an -y ' + file_name + '.png')
– Edhowler
Mar 4 at 18:59...
What does the “__block” keyword mean?
...s Blocks Programming Topics.
The important example is this one:
extern NSInteger CounterGlobal;
static NSInteger CounterStatic;
{
NSInteger localCounter = 42;
__block char localCharacter;
void (^aBlock)(void) = ^(void) {
++CounterGlobal;
++CounterStatic;
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