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How do I uniquely identify computers visiting my web site?
... stuck.
Validation. You need to guard against spoofing, session hijacking, etc.
Even if there are ways to track a computer without using cookies there will always be a way to bypass it and software that will do this automatically. If you really need to track something based on a computer you will ...
What is the best open XML parser for C++? [duplicate]
...ments, computer games, or any other applications where available memory or CPU processing power comes at a premium. RapidXML is licensed under Boost Software License and its source code is freely available.
Features
Parsing speed (including DOM tree
building) approaching speed of
strlen function ...
setImmediate vs. nextTick
...─────┬────────────┘ │ data, etc. │
│ ┌──────────┴────────────┐ └───────────────┘
│ │ check │
│ └──────────┬...
Scalar vs. primitive data type - are they the same thing?
... typically contrasted with compounds, such as arrays, maps, sets, structs, etc. A scalar is a "single" value - integer, boolean, perhaps a string - while a compound is made up of multiple scalars (and possibly references to other compounds). "Scalar" is used in contexts where the relevant distinct...
Format floats with standard json module
... do anything to floats. However loads does. So if you don't mind the extra CPU load, you could throw it through the encoder/decoder/encoder and get the right result:
>>> json.dumps(json.loads(json.dumps([.333333333333, .432432]), parse_float=lambda x: round(float(x), 3)))
'[0.333, 0.432]'
...
What does it mean when MySQL is in the state “Sending data”?
.... It may be the table itself, an index, a temporary table, a sorted output etc.
If you have a 1M records table (without an index) of which you need only one record, MySQL will still output the status as "sending data" while scanning the table, despite the fact it has not sent anything yet.
...
How to make blinking/flashing text with CSS 3
... The only true "blink" solution. And also works with color property etc. Other stuff are workarounds or "fade" animations.
– Martin Schneider
Feb 4 '18 at 12:48
add a c...
What is the real overhead of try/catch in C#?
...
When an exception is thrown in addition to the stack unwinding operations etc that take place which others have mentioned you should be aware that a whole bunch of runtime/reflection related stuff happens in order to populate the members of the exception class such as the stack trace object and the...
Condition within JOIN or WHERE
Is there any difference (performance, best-practice, etc...) between putting a condition in the JOIN clause vs. the WHERE clause?
...
How often should you use git-gc?
...pository is used. With one user checking in once a day and a branch/merge/etc operation once a week you probably don't need to run it more than once a year.
With several dozen developers working on several dozen projects each checking in 2-3 times a day, you might want to run it nightly.
It won't...