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@UniqueConstraint and @Column(unique = true) in hibernate annotation
...= true) is a shortcut to UniqueConstraint when it is only a single field.
From the example you gave, there is a huge difference between both.
@Column(unique = true)
@ManyToOne(optional = false, fetch = FetchType.EAGER)
private ProductSerialMask mask;
@Column(unique = true)
@ManyToOne(optional = f...
How to escape @ characters in Subversion managed file names?
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From the SVN book (emphasis added):
The perceptive reader is probably wondering at this point whether the peg revision syntax causes problems for working copy paths or URLs that actually have at signs in them. After all, ...
How can I get browser to prompt to save password?
...eliably, some browsers do not trigger the "remember" feature if you submit from Javascript.
– JustAMartin
Dec 8 '17 at 15:46
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Format numbers to strings in Python
...ntro book and the slides for the Intro+Intermediate Python courses I offer from time-to-time. :-)
Aug 2018 UPDATE: Of course, now that we have the f-string feature in 3.6, we need the equivalent examples of that, yes another alternative:
>>> name, age = 'John', 35
>>> f'Name: {na...
RegEx to find two or more consecutive chars
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Personnaly (as a nooby) I've used:
[0-9][0-9]+.
But the one from Simon, is way better ! =D
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How to check if a path is absolute path or relative path in cross platform way with Python?
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From python 3.4 pathlib is available.
In [1]: from pathlib import Path
In [2]: Path('..').is_absolute()
Out[2]: False
In [3]: Path('C:/').is_absolute()
Out[3]: True
In [4]: Path('..').resolve()
Out[4]: WindowsPath('C:/the...
How to check if a python module exists without importing it
...oss this question while searching for a way to check if a module is loaded from the command line and would like to share my thoughts for the ones coming after me and looking for the same:
Linux/UNIX script file method: make a file module_help.py:
#!/usr/bin/env python
help('modules')
Then ...
MongoDB vs. Cassandra [closed]
...L and have MySQL populate a NoSQL data store for reads -- you then benefit from each technology's strengths. This does add more complexity, but you already have the MySQL side -- just add MongoDB, Cassandra, etc to the mix.
NoSQL datastores generally scale way better than a traditional DB for the ...
Are PHP Variables passed by value or by reference?
...t examples and exactly what I thought would happen. I'm a newcomer to PHP (from Javascript / node.js background) and sometimes it's hard to grok what's going on, but this is very clear!
– TKoL
May 13 '19 at 10:26
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Favicon dimensions? [duplicate]
...2x32 picture last: it is good enough for Firefox, and that will prevent it from downloading a big picture it does not need. edit: fixed in 2016.
Also note that Chrome does not support the sizes attribute and tends to load all declared icons. Better not declare too many icons. edit: fixed in 2018.
Mo...