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MySql server startup error 'The server quit without updating PID file '
...", there should be more info. It might be in:
/usr/local/var/mysql/your_computer_name.local.err
It's probably problem with permissions
check if any mysql instance is running
ps -ef | grep mysql
if yes, you should stop it, or kill the process
kill -9 PID
where PID is the number d...
Are there conventions on how to name resources?
... layouts with widgets and containers, I use the convention:
<layout>_<widget/container>_<name>
I do the same strategy for any dimens, strings, numbers, and colors I use in those layouts. However, I do try generalizing. e.g if all buttons have a common textColor, I won't prefix t...
What is the (function() { } )() construct in JavaScript?
...nswered Nov 22 '11 at 14:21
gion_13gion_13
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C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
...opt] int32 x) cil managed
{
.param [1] = int32(5)
.maxstack 8
L_0000: nop
L_0001: ret
}
.method //this is a new method
private hidebysig static //it is private, ???, and static
void foo //it returns nothing (void) and is named Foo
([opt] int32 x) //it has one parameter, which i...
Schema for a multilanguage database
...ng a related translation table for each translatable table?
CREATE TABLE T_PRODUCT (pr_id int, PRICE NUMBER(18, 2))
CREATE TABLE T_PRODUCT_tr (pr_id INT FK, languagecode varchar, pr_name text, pr_descr text)
This way if you have multiple translatable column it would only require a single join to g...
Cross-browser testing: All major browsers on ONE machine
...Safari on a single Windows machine.
Download: http://sandboxie.com/index.php?DownloadSandboxie
Patch: The extended version is required to enable multiple sandboxes at a time. Pay them or visit YouTube.
Running multiple IE/Safari versions simultaneously requires the extended version. If you don't m...
What are the advantages of NumPy over regular Python lists?
...nts = 10000
Ntimeits = 10000
x = arange(Nelements)
y = range(Nelements)
t_numpy = Timer("x.sum()", "from __main__ import x")
t_list = Timer("sum(y)", "from __main__ import y")
print("numpy: %.3e" % (t_numpy.timeit(Ntimeits)/Ntimeits,))
print("list: %.3e" % (t_list.timeit(Ntimeits)/Ntimeits,))
w...
Create a pointer to two-dimensional array
...
Here you wanna make a pointer to the first element of the array
uint8_t (*matrix_ptr)[20] = l_matrix;
With typedef, this looks cleaner
typedef uint8_t array_of_20_uint8_t[20];
array_of_20_uint8_t *matrix_ptr = l_matrix;
Then you can enjoy life again :)
matrix_ptr[0][1] = ...;
Beware of...
How to convert nanoseconds to seconds using the TimeUnit enum?
...:
long elapsedTime = end - start;
double seconds = (double)elapsedTime / 1_000_000_000.0;
If you use TimeUnit to convert, you'll get your result as a long, so you'll lose decimal precision but maintain whole number precision.
...
How to remove all namespaces from XML with C#?
... <insert>
<offer xmlns=""http://schema.peters.com/doc_353/1/Types"">0174587</offer>
<type2 xmlns=""http://schema.peters.com/doc_353/1/Types"">014717</type2>
<supplier xmlns=""http://schema.peters.com/doc_353/1/Types"">019172</suppli...