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Why use HttpClient for Synchronous Connection
...tivity, but what I am doing is purely synchronous, so I cannot see any significant benefit over using HttpWebRequest .
5 A...
Copy a table from one database to another in Postgres
...get database:
pg_dump -t table_to_copy source_db | psql target_db
Note: If the other database already has the table set up, you should use the -a flag to import data only, else you may see weird errors like "Out of memory":
pg_dump -a -t my_table my_db | psql target_db
...
How can I restore the MySQL root user’s full privileges?
...
If the GRANT ALL doesn't work, try:
Stop mysqld and restart it with the --skip-grant-tables option.
Connect to the mysqld server with just: mysql (i.e. no -p option, and username may not be required).
Issue the following c...
How to use a decimal range() step value?
...btain). linspace takes a number of points to return, and also lets you specify whether or not to include the right endpoint:
>>> np.linspace(0,1,11)
array([ 0. , 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1. ])
>>> np.linspace(0,1,10,endpoint=False)
array([ 0. , 0.1, ...
MLKitImageLabeler 拓展：离线图像标注（拍照识物） · App Inventor 2 中文网
...鼠标移动时拖动元素 document.onmousemove = function(e) { if (!isDragging) return; element.style.left = (e.clientX - offsetX) + 'px'; element.style.top = (e.clientY - offsetY) + 'px'; }; // 鼠标释放时停止拖动 document.onmouseup = function(...
When should we use mutex and when should we use semaphore
...). This isn't so easy with a multiple-instance resource since you may not know whether the thread wants to claim another instance or the same instance again.
– paxdiablo
Oct 28 '10 at 5:21
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STL or Qt containers?
... captives into the Colosseum and then hunted them down with lions. If you know better, don't follow local habits. That's as true in Qt as it would have been for Modern Man in the Roman Empire...
– Marc Mutz - mmutz
Jan 6 '15 at 12:40
...
Why am I getting error for apple-touch-icon-precomposed.png
... I found a nice article that details everything I wanted to know (and more): mathiasbynens.be/notes/touch-icons
– Alexis
May 22 '13 at 15:02
...
Numpy: find first index of value fast
...e reference:
Using numba (1) is the easiest way until numpy implements it. If you use anaconda python distribution it should already be installed.
The code will be compiled so it will be fast.
@jit(nopython=True)
def find_first(item, vec):
"""return the index of the first occurence of item in v...
Ruby - test for array
...
I downvoted this now since I don't think this is a good practice in a language like Ruby. The answer by @zgchurch is clearly a much more idiomatic approach to the question. In cases like this, I think it makes much more sense to try and figur...