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Is there a difference between “==” and “is”?
... I found that: echo 'import sys;tt=sys.argv[1];print(tt is "foo", tt == "foo", id(tt)==id("foo"))'| python3 - foo output: False True False.
– ahuigo
Jul 23 '18 at 12:38
...
How to fluently build JSON in Java?
...nObject jsonArray = JsonBuilderFactory.buildArray().addObject().end().add("foo", "bar").getJson(); //Error: tried to add a string with property key to array.
JsonObject jsonObject = JsonBuilderFactory.buildObject().addArray().end().add("foo").getJson(); //Error: tried to add a string without propert...
How to avoid merge-commit hell on GitHub/BitBucket
...pment before a merge like so:
git checkout master
git checkout -b feature/foo
# make some commits
git rebase master
git checkout master
git merge --ff-only feature/foo
Rebase also has a lot of flags, including interactive rebasing with the -i flag, but you may not need that if you're keeping th...
Getting raw SQL query string from PDO prepared statements
...is the same.
081016 16:51:28 2 Query prepare s1 from 'select * from foo where i = ?'
2 Prepare [2] select * from foo where i = ?
081016 16:51:39 2 Query set @a =1
081016 16:51:47 2 Query execute s1 using @a
2 Execute [2] select * from foo wh...
How to get the URL without any parameters in JavaScript?
...ill return incorrect result for page http://www.example.com:8080/asdf.html?foo=bar
– izogfif
Aug 17 '18 at 15:00
6
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How do I prevent 'git diff' from using a pager?
...d to avoid an error, you have to make an alias like this: git config alias.foo '!git --no-pager foo'. Somewhat confusing. Simply aliasing to '--no-pager foo' won't work.
– Jim Stewart
Oct 10 '13 at 20:20
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How do I use CREATE OR REPLACE?
...
There is no create or replace table in Oracle.
You must:
DROP TABLE foo;
CREATE TABLE foo (....);
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What is __declspec and when do I need to use it?
...ectively) a symbol from or to a DLL.
// header
__declspec(dllimport) void foo();
// code - this calls foo() somewhere in a DLL
foo();
(__declspec(..) just wraps up Microsoft's specific stuff - to achieve compatibility, one would usually wrap it away with macros)
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Asterisk in function call
... sequence into separate arguments for the function call.
>>> def foo(a, b=None, c=None):
... print a, b, c
...
>>> foo([1, 2, 3])
[1, 2, 3] None None
>>> foo(*[1, 2, 3])
1 2 3
>>> def bar(*a):
... print a
...
>>> bar([1, 2, 3])
([1, 2, 3],)
>>...
Why dict.get(key) instead of dict[key]?
... @MustafaS: For example, suppose x = {'a':0}. Then x.get('a', 'foo') returns 0 but x.get('a') or 'foo' returns 'foo'.
– unutbu
Dec 4 '15 at 22:27
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