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Should MySQL have its timezone set to UTC?
...sr/share/zoneinfo | mysql -u root -p mysql
if this command gives you the error "data too long for column 'abbreviation' at row 1", then it might be caused by a NULL character being appended at the end of the timezone abbreviation
the fix being to run this
mysql_tzinfo_to_sql /usr/share/zoneinfo ...
Easier way to debug a Windows service
... wanted to have an "interactive" instance when double clicking and not and error message about the fact that a service cannot be started that way. Varying goals I guess ;-)
– Christian.K
Feb 16 '12 at 9:36
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Why are arrays covariant but generics are invariant?
...t[] objects = strings; // valid, String[] is Object[]
objects[0] = 12; // error, would cause java.lang.ArrayStoreException: java.lang.Integer during runtime
If this was allowed with generic collections:
List<String> strings = new ArrayList<String>();
List<Object> objects = stri...
What are the obj and bin folders (created by Visual Studio) used for?
...ase sub-folder depending on the currently selected configuration, i get an error that the data type couldn't be created when I debug my application. My app only ever looks in the bin folder for the dlls and never knows to look in the debug or release folder. How do I correct this?
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Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail
...and any jQuery ready event handlers should be in the <body> to avoid errors (although it's not fool-proof!).
One more reason to not use Google-hosted jQuery is that in some countries, Google's domain name is banned.
s...
Why is Hibernate Open Session in View considered a bad practice?
..., it will occur during the writing of the page: you cannot present a clean error page to the user and the only thing you can do is write an error message in the body
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Modify request parameter with servlet filter
...p(), or even getAttribute() to get the request data, so, through trial and error, I determined that the servlet was calling HTTPServletRequest.getInputStream() and getQueryString(). My advice to anyone attempting this task for closed servlets is to wrap every single accessor in HTTPServletRequest in...
What is the proper way to re-throw an exception in C#? [duplicate]
...ew Exception ("Put more context here", ex)
}
This preserves the original error, but allows you to put more context, such as an object ID, a connection string, stuff like that. Often my exception reporting tool will have 5 chained exceptions to report, each reporting more detail.
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Parsing command-line arguments in C?
..._MODE, WORD_MODE, LINE_MODE } mode;
bool isCaseInsensitive;
};
static error_t parse_opt(int key, char *arg, struct argp_state *state) {
struct arguments *arguments = state->input;
switch (key) {
case 'l': arguments->mode = LINE_MODE; break;
case 'w': arguments->mode = W...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
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repset:SECONDARY> show tables;
#输出
Sun Dec 29 21:50:48.590 error: { "$err" : "not master and slaveOk=false", "code" : 13435 } at src/mongo/shell/query.js:128
#mongodb默认是从主节点读写数据的，副本节点上不允许读，需要设置副本节点可以读。
repset:S...