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How to get the first line of a file in a bash script?
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Significantly more overhead than the read approach. $() forks off a subshell, and using an external command (any external command) means you're calling execve(), invoking the linker and loader (if it's using shared libraries, which is usua...
Why does C++ require a user-provided default constructor to default-construct a const object?
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What's the difference of “./configure” option “--build”, “--host” and “--target”?
...file to run on
However, when you are building toolchains, things can get more complicated. I think that the following is correct (though I can't say I've ever manually compiled a cross-debugger):
Lets say that you have:
a powerpc build machine that you are going to do all compilation on
severa...
Error Domain=NSURLErrorDomain Code=-1005 “The network connection was lost.”
... keeps this connection to re-use later (as it should), but it keeps it for more than the timeout parameter of the Keep-Alive header (it seems to always keep the connection alive for 30 seconds.)
Then when a second request is sent by the app less than 30 seconds later, it tries to re-use a connection...
Using GCC to produce readable assembly?
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If you compile with debug symbols, you can use objdump to produce a more readable disassembly.
>objdump --help
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-S, --source Intermix source code with disassembly
-l, --line-numbers Include line numbers and filenames in output
objdump -drwC -Mintel is nice:
-r s...
How to search a specific value in all tables (PostgreSQL)?
... If you want to grep text data (which is typically encoded in more recent versions of postgres), you may need to ALTER DATABASE your_db_name SET bytea_output = 'escape'; on the database (or a copy thereof) before dumping it. (I'm not seeing a way to specify this just for a pg_dump comma...
AngularJS UI Router - change url without reloading state
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Best data type to store money values in MySQL
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I agree with YahyaE, more decimals is better. There are some currencies that typically use 3 decimal places, such as the Bahraini, Jordanian, or Kuwaiti Dinars, so you need at least 3. Four or five is better.
– Edwin Hoogerb...
Add a prefix to all Flask routes
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Odd behavior when Java converts int to byte?
...umber scheme the most significant bit specifies the sign of the number. If more bits are needed, the most significant bit ("MSB") is simply copied to the new MSB.
So if you have byte 255: 11111111
and you want to represent it as an int (32 bits) you simply copy the 1 to the left 24 times.
Now, one...