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How Pony (ORM) does its tricks?
... if c.country == 'USA')
>>> import dis
>>> dis.dis(gen.gi_frame.f_code)
1 0 LOAD_FAST 0 (.0)
>> 3 FOR_ITER 26 (to 32)
6 STORE_FAST 1 (c)
9 LOAD_FAST 1 (c)
...
Get the IP address of the machine
...ifAddrStruct);
for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) {
if (!ifa->ifa_addr) {
continue;
}
if (ifa->ifa_addr->sa_family == AF_INET) { // check it is IP4
// is a valid IP4 Address
tmpAddrPtr=&((struct ...
What is the difference between “pom” type dependency with scope “import” and without “import”?
...lude> in <dependency> also. For example checkout this : jdbi.org/#_getting_started
– Nitiraj
Mar 21 '18 at 12:48
...
What's the difference of “./configure” option “--build”, “--host” and “--target”?
...et platforms .. you can get them here: gnu.org/software/gettext/manual/html_node/config_002eguess.html
– wirtsi
Jul 17 '19 at 15:11
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Error installing libv8: ERROR: Failed to build gem native extension
...m at /home/gitlab/gitlab/vendor/bundle/ruby/2.1.0/cache/libv8-3.16.14.3-x86_64-linux.gem. It may be corrupted. I remove the whole cache folder and re-run bundle install --full-index --deployment --without development test postgres aws. Works.
– Nick Dong
Mar 2...
Difference between Destroy and Delete
...ary key, and no callbacks are executed.
To enforce the object's before_destroy and after_destroy callbacks or any :dependent association options, use #destroy.
ActiveRecord::Persistence.destroy
Deletes the record in the database and freezes this instance to reflect that no changes should b...
How do I delete an exported environment variable?
Before installing gnuplot, I set the environment variable GNUPLOT_DRIVER_DIR = /home/gnuplot/build/src . During the installation, something went wrong.
...
Generating Random Passwords
...Define default min and max password lengths.
private static int DEFAULT_MIN_PASSWORD_LENGTH = 8;
private static int DEFAULT_MAX_PASSWORD_LENGTH = 10;
// Define supported password characters divided into groups.
// You can add (or remove) characters to (from) these groups.
priv...
“open/close” SqlConnection or keep open?
...ion()) {} public SqlConnection GetConnection() { return new SqlConnection(_connectionString); }
– ganders
Jan 23 at 17:12
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Merge / convert multiple PDF files into one PDF
...eir order is preserved by "*". If its not preserved, using ranges: filename_{0..9}.pdf solves it.
– lepe
Jan 5 '15 at 5:48
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