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Why does Oracle 9i treat an empty string as NULL?
...
docs.oracle.com/cd/B19306_01/server.102/b14200/…
– Walter Mitty
Oct 16 '18 at 0:29
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Rails: Using build with a has_one association in rails
... later on create a profile for that user. I tried using build with a has_one association but that blew up. The only way I see this working is using has_many . The user is supposed to only have at most one profile .
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Error “gnu/stubs-32.h: No such file or directory” while compiling Nachos source code
...e files in a non standard location. You'll also need to do:
export LIBRARY_PATH=/usr/lib/$(gcc -print-multiarch)
export C_INCLUDE_PATH=/usr/include/$(gcc -print-multiarch)
export CPLUS_INCLUDE_PATH=/usr/include/$(gcc -print-multiarch)
somewhere before you build (say in your .bashrc).
If you ar...
Trim trailing spaces in Xcode
...ing script:
#!/usr/bin/perl
while (<>) {
s/\s+$//;
print "$_\n";
}
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Django: Why do some model fields clash with each other?
... a reverse relation from User back to GameClaim, which is usually gameclaim_set. However, because you have two FKs, you would have two gameclaim_set attributes, which is obviously impossible. So you need to tell Django what name to use for the reverse relation.
Use the related_name attribute in the...
Creating a new user and password with Ansible
...ss
user:
name: {{ uusername }}
password: {{ upassword | password_hash('sha512') }}
groups: admin append=yes
when: assigned_role == "yes"
- name: Creating users "{{ uusername }}" without admin access
user:
name: {{ uusername }}
password: {{ upassword | password_hash('sha...
How do I create a foreign key in SQL Server?
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create table question_bank
(
question_id uniqueidentifier primary key,
question_exam_id uniqueidentifier not null,
question_text varchar(1024) not null,
question_point_value decimal,
constraint fk_questionbank_exams foreign ke...
Struct constructor: “fields must be fully assigned before control is returned to the caller.”
...ample, prefix all fields with an underscore, so you can simply call this:
_probability = probability;
and see easily what's happening.
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How can I randomize the lines in a file using standard tools on Red Hat Linux?
... to Jim's answer:
My ~/.bashrc contains the following:
unsort ()
{
LC_ALL=C sort -R "$@"
}
With GNU coreutils's sort, -R = --random-sort, which generates a random hash of each line and sorts by it. The randomized hash wouldn't actually be used in some locales in some older (buggy) versions,...
Best way to create an empty object in JSON with PHP?
...ll end up with a {} in your encoded data you could use a hack such as:
json_encode (json_decode ("{}"));
Even though it's tedious and ugly I do assume/hope that json_encode/json_decode is compatible with one and other and always will evalute the following to true:
$a = <something>;
$a === js...