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Best data type for storing currency values in a MySQL database
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I've read that performance is typically faster with INT than DECIMAL, even in the latest versions of MySQL. It's also easier when you need to bring these values into PHP or something and compare values.
– Dan...
For every character in string
...racters of a std::string, using a range-based for loop (it's from C++11, already supported in recent releases of GCC, clang, and the VC11 beta):
std::string str = ???;
for(char& c : str) {
do_things_with(c);
}
Looping through the characters of a std::string with iterators:
std::string str...
Find and Replace text in the entire table using a MySQL query
...ements and instead of using slashes as my delimiters I used pipes instead (read this up grymoire.com/Unix/Sed.html). Example: sed -i 's|olddomain.com|http://newdomain.com|g' ./db.sql
– Mike Kormendy
Feb 9 '15 at 4:49
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Java project in Eclipse: The type java.lang.Object cannot be resolved. It is indirectly referenced f
...le? I had changed my JAVA_HOME variable and this popped up. I just removed/readded the JRE library.
– user2124871
Sep 23 '16 at 15:15
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How do you debug a regex? [closed]
...can become quite complex. The lack of white space makes them difficult to read. I can't step though a regular expression with a debugger. So how do experts debug complex regular expressions?
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How can I make console.log show the current state of an object?
... it'll do the lazy evaluation when you expand it. But if the console is already open (e.g. you open the console and then hit refresh on the page), it'll do eager evaluation -- i.e. print the value at the time the log statement was run.
– Polemarch
Jan 14 '14 a...
Git keeps asking me for my ssh key passphrase
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Want to why this happen? Read the technical note on OpenSSH changes developer.apple.com/library/content/technotes/tn2449/…
– samwize
Apr 25 '17 at 15:38
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4
...4; ++i)
^
The only way we can analyze what the program is doing, is by reading the generated assembly code.
Here is the full assembly listing:
.file "a.cpp"
.section .text$_ZNKSt5ctypeIcE8do_widenEc,"x"
.linkonce discard
.align 2
LCOLDB0:
LHOTB0:
.align 2
.p2align ...
PostgreSQL error: Fatal: role “username” does not exist
...ting system user does not exist. You'd need to adapt your strategy there.
Read about database roles and client authentication in the manual.
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Outlook autocleaning my line breaks and screwing up my email format
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I'm seeing the same problem when generating a plain-text email and then reading it with Outlook 2003 SP3. It appears you can avoid the removal process by it by keep the line length under 40 characters. May not always be practical.
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