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How do I free my port 80 on localhost Windows?
...ative rights. open start, and write in search "cmd" right click on cmd and select Run as administrator.
– MuhFred
Dec 5 '14 at 19:30
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How to implement a queue with three stacks?
... bound of C
* K := B_u + C_u + 1
WLOG2, for an n such that |A(n)| > K, select K elements from Q(n). Suppose that 1 of those elements is in A(n + x), for all x >= 0, i.e. the element is always in stack A no matter how many queue operations are done.
X := that element
Then we can define
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jQuery: count number of rows in a table
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Use a selector that will select all the rows and take the length.
var rowCount = $('#myTable tr').length;
Note: this approach also counts all trs of every nested table!
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Changing all files' extensions in a folder with one command on Windows
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on CMD
type
ren *.* *.jpg
. will select all files, and rename to * (what ever name they have) plus extension to jpg
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Is there a command to undo git init?
...strator--hit the windows key, type 'cmd', right click 'command prompt' and select 'run as administrator) and try the same commands.
rd is an alternative form of the rmdir command. http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/rmdir.mspx?mfr=true
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How can I tell if my server is serving GZipped content?
...erested). You can tell using Developer Tools (F12). Go to the Network tab, select the file you want to examine and then look at the Headers tab on the right. If you are gzipped, then you will see that in the Content-Encoding.
In this example, slider.jpg is indeed being gzipped.
Compare that to t...
How to repeat last command in python interpreter shell?
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In IDLE, go to Options -> Configure IDLE -> Keys and there select history-next and then history-previous to change the keys.
Then click on Get New Keys for Selection and you are ready to choose whatever key combination you want.
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asynchronous vs non-blocking
...ing socket would have blocked. You have to use a separate function such as select or poll to find out when is a good time to retry.
But asynchronous sockets (as supported by Windows sockets), or the asynchronous IO pattern used in .NET, are more convenient. You call a method to start an operation, ...
How do cache lines work?
...(DDR1/2/3/4 SDRAM burst transfer size is configurable up to 64B; CPUs will select the burst transfer size to match their cache line size, but 64B is common)
As a rule of thumb, if the processor can't forecast a memory access (and prefetch it), the retrieval process can take ~90 nanoseconds, or ~250...
Could not load NIB in bundle
...les in the file inspector ，the property "Target Membership" pitch on the select box, then your xib file was linked with your target
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