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Is there a standardized method to swap two variables in Python?

...e assigned to the first element of the tuple (which is the object that was formely b before the swap because it had name b) and the second identifier b is assigned to the second element of the tuple (which is the object that was formerly a before the swap because its identifiers was a) This mechan...
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How to update two tables in one statement in SQL Server 2005?

...eference exactly one base table in the FROM clause of the view. For more information about updatable views, see CREATE VIEW (Transact-SQL). CREATE VIEW (Transact-SQL) You can modify the data of an underlying base table through a view, as long as the following conditions are true: Any modification...
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Replace input type=file by an image

...er-events: none in img tag to make it working if input file type tag is in FORM tag. Seems working for me in all major browsers. Hope it helps someone. share | improve this answer | ...
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Best practices for API versioning? [closed]

...nce of API versions that have expiration date on them. All programming platforms/languages commonly used to implement web services (Java, .NET, PHP, Perl, Rails, etc.) allow easy binding of web service end-point(s) to a base URI. This way it's easy to gather and keep a collection of files/classes/me...
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byte[] to hex string [duplicate]

... @Grungondola: That is most likely the reason for the bad performance. If you use += in a loop it works well for very short loops, but it scales very badly. Each additional iteration roughly doubles the execution time, so at about 20 iterations you have a performance issue. Every addit...
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Maximum Year in Expiry Date of Credit Card

...ct the age input field to that max just in case the oldest person used the form once they turned 116... :[ – Alastair Jan 25 '13 at 14:23 ...
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What can , and be used for?

...</f:viewParam> </f:metadata> <h:message for="id" /> Performing business action on GET parameters You can use the <f:viewAction> for this. <f:metadata> <f:viewParam id="id" name="id" value="#{bean.id}" required="true"> <f:validateLongRange minimum=...
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'Operation is not valid due to the current state of the object' error during postback

... Somebody posted quite a few form fields to your page. The new default max introduced by the recent security update is 1000. Try adding the following setting in your web.config's <appsettings> block. in this block you are maximizing the MaxHttpCo...
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What is a Proxy in Doctrine 2?

... UPDATE This answer contains wrong information about differences between proxy objects and partial objects. See @Kontrollfreak's answer for more details: https://stackoverflow.com/a/17787070/252591 Proxy objects are used whenever your query doesn't return al...
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Can (domain name) subdomains have an underscore “_” in it?

...bel for labels used in hostnames and says: This is the classical label form used, albeit with some additional restrictions, in hostnames (RFC 952). Its syntax is identical to that described as the "preferred name syntax" in Section 3.5 of RFC 1034 as modified by RFC 1123. Briefly, it is a strin...