大约有 19,000 项符合查询结果（耗时：0.0233秒） [XML]
When should we implement Serializable interface?
...ma is better. And JSON is meant to be human readable, while binary encoded formats are far more efficient over the wire
– OneCricketeer
Apr 23 '18 at 7:10
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Create Django model or update if exists
... In my case, in place of identifier, i have group of fields which forms unique_together. How is the usage for this case?
– Rakmo
Mar 14 '18 at 11:59
1
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Transparent ARGB hex value
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The format is #RRGGBBAA Hex8 (or #RGBA in Hex4) and NOT #AARRGGBB (or #ARGB) I have tested in Chrome 62,63,64 Refer to CanIUse.com , https://css-tricks.com/8-digit-hex-codes/ , Chrome Feature Status
– SG...
What does the M stand for in C# Decimal literal notation?
...biguity there - as long as it fits the type, it will not lose/garble any information. The same is not true of decimal numbers. Casting the double value 0.42 to decimal can give you a different value than 0.42M (and the same for using a double literal in place of a float literal - float val = 423.3 a...
How does the SQL injection from the “Bobby Tables” XKCD comic work?
...tudent, where the $xxx variable contents was taken directly out of an HTML form, without checking format nor escaping special characters.
So if $firstName contains Robert'); DROP TABLE students; -- the database program will execute the following request directly on the DB:
INSERT INTO 'students' ...
How to use PHP OPCache?
...guration OpCache uses. This includes all ini settings as well as version information and blacklisted files.
var_dump(opcache_get_configuration());
opcache_get_status():
This will return an array with information about the current status of the cache. This information will include things like: th...
How to measure time in milliseconds using ANSI C?
...OCK_MONOTONIC is not implemented on many systems (including many Linux platforms).
– Dipstick
Aug 9 '09 at 9:13
2
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Protecting Java Source Code From Being Accessed [closed]
...ata watermarking
This is where you change the file's metadata to contain information. You can embed your name, a hash, etc. in unseen parts of a file, especially EXE's. In NT days, Alternate Data Streams were popular.
Unusual characters
I'll throw this one in just for kicks. An old IRC impersonation...
How to get the path of a running JAR file?
...ds the full URL resource path of the class, from which you will need to perform additional string manipulation. It may be a file: path, but it could also be jar:file: or even something nastier like bundleresource://346.fwk2106232034:4/foo/Bar.class when executing within an OSGi framework. Conversely...
What is database pooling?
... |
+-------+ +-----------+
In it's simplest form, it's just a similar API call (1) to an open-connection API call which is similar to the "real" one. This first checks the pool for a suitable connection (2) and, if one is available, that's given to the client. Otherwis...