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How to get the source directory of a Bash script from within the script itself?
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Check variable equality against a list of values
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13 Answers
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How to reuse an ostringstream?
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157
I've used a sequence of clear and str in the past:
// clear, because eof or other bits may be...
When I catch an exception, how do I get the type, file, and line number?
...s.exc_info()
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
print(exc_type, fname, exc_tb.tb_lineno)
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How to “EXPIRE” the “HSET” child key in redis?
I need to expire all keys in redis hash, which are older than 1 month.
11 Answers
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Run command on the Ansible host
...If you want to run an entire play on the Ansible host, then specify hosts: 127.0.0.1 and connection:local in the play, for example:
- name: a play that runs entirely on the ansible host
hosts: 127.0.0.1
connection: local
tasks:
- name: check out a git repository
git: repo=git://foosball...
Types in MySQL: BigInt(20) vs Int(20)
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CREATE TABLE foo ( bar INT(20) ZEROFILL );
INSERT INTO foo (bar) VALUES (1234);
SELECT bar from foo;
+----------------------+
| bar |
+----------------------+
| 00000000000000001234 |
+----------------------+
It's a common source of confusion for MySQL users to see INT(20) and ...
How to add image to canvas
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edited Feb 15 '18 at 21:38
answered May 15 '11 at 21:32
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How do I do multiple CASE WHEN conditions using SQL Server 2008?
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10 Answers
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Convert a byte array to integer in Java and vice versa
... the ByteBuffer. It can do all the work for you.
byte[] arr = { 0x00, 0x01 };
ByteBuffer wrapped = ByteBuffer.wrap(arr); // big-endian by default
short num = wrapped.getShort(); // 1
ByteBuffer dbuf = ByteBuffer.allocate(2);
dbuf.putShort(num);
byte[] bytes = dbuf.array(); // { 0, 1 }
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